[darktable-user] Lens correction not working

[t_drei]

Hi,

Lens correction doesn't work anymore for my Sony RX10M4.

In earlier versions of darktable, the camera was recognized and lens
correction (geometry) worked just fine. Now, there's no recognition of
the camera, and I cannot choose it from the list (my other two cameras
are still there, e.g. Sony RX100M3, but the RX 10s are missing).

I use darktable 3.2.1 / Ubuntu; as I'm only a happy user of darktable
(no IT expert), I didn't change any part of the installation.

Any suggestion what I could do?

Best regards, Regina



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[darktable-user] lens correction

[csaba molnar]

Hi,
I have got a Lumix DC-FZ82 camera.
I also used DT 3.0.0 (Win10) well with my TZ60 camera.
But my new camera (FZ82) lens data is not in "lens correction" module.
So I cant use DT at the moment.
I checked "lensfun.sourceforge.net" and realized that FZ82 is not present.
Shall I wait for new version of DT or are there any other solution?
Thanx for your suggestions. :)
Csaba


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Re: [darktable-user] lens correction corrupts image export

[Subhash Fotografie]

Now I have an image with has no lens correction and I cannot export it. 
Sometimes it gets completely black (except the watermark), sometimes it is 
distorted like the one mentioned below.

Is this a known bug? Are there workarounds?

Thank you for suggestions!


[Subhash Fotografie  schrieb am 26.1.2020 um 16:40 Uhr:]

>If I export an image with lens correction activated it gets corrupted:

>https://www.subhash.at/fotoblog/wp-content/uploads/
>beim_bahnhof_201209523_mit_Objektivkorrektur.jpg

>DT 3.0.0 on Mac
>Lens: Olympus 12-60mm f/2.8-4

>Deactivating lens correction leads to a correct image. I have seen a
>similar appearance before but with an image without lens correction
>used. This other image I could not export correctly.


>
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[darktable-user] lens correction corrupts image export

[Subhash Fotografie]

If I export an image with lens correction activated it gets corrupted:

https://www.subhash.at/fotoblog/wp-content/uploads/beim_bahnhof_201209523_mit_Objektivkorrektur.jpg

DT 3.0.0 on Mac
Lens: Olympus 12-60mm f/2.8-4

Deactivating lens correction leads to a correct image. I have seen a similar 
appearance before but with an image without lens correction used. This other 
image I could not export correctly.



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Re: [darktable-user] Lens Correction issues

[Terry Pinfold]

Hi Frieder,
  copied this from a google search

he lens correction profiles (distortion and vignetting) are embedded in the 
Nikon NEF metadata. They're not actually applied to the image but instead used 
by raw processors such as ACR/LR, which apply the correction profile to the 
image when you import the raw.

Dr Terry Pinfold
Cytometry & Histology Lab Manager
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053

From: frieder 
Sent: Tuesday, 17 December 2019 1:04 AM
To: Dusenberg ; darktable-user@lists.darktable.org 

Subject: Re: [darktable-user] Lens Correction issues

Am Donnerstag, den 05.12.2019, 09:08 + schrieb Dusenberg:
> Hi
>
>
>
> Issue 1:
> My Nikon D810 automatically applies lens distortion correction so the
> raw files are already corrected for the lens in use.  I have Nikon
> AF-S lenses so this works consistently and accurately. However the
> camera does not correct for TCA.  For example, my 24-70 lens
> generally needs a red correction of 1.00020-1.00040 while my 70-200
> needs 1.00010-1.00030. I have to do this manually for every shot
> which is a pain and 'something else to do'. What I want is for DT to
> apply Lens Correction as part of my style so that lens and shot data
> of the current image is used but then only the TCA correction is
> applied with a preset value of say red:1.00030 for the 24-70 lens. I
> can then amend this if necessary during my normal workflow review of
> each image. I have tried and failed to do this.  The problem I find
> is that if I open LC in Darkroom, set it to TCA Only enter a
> correction and save as a preset, when I use that preset whether alone
> or as part of a style, LC no longer looks up the lens and shot data
> for the current image, but applies all the settings present during
> the creation of the preset - which means the wrong lens, f/stop,
> distance. I may be missing something obvious but I've no idea what it
> is.  Does anyone know how to do what I need?
>
When creating a new preset, it is possible to define to use it
automatically in some specific cases. Therefore one of the Options
in the naming-dialoque must be activated.
Activating one of the ceckboxes opens more Input fields whicht allows
to define this style automatically used for a specific lens.

I made a screeshot of the dialoque, albeit it is in german, I hope it
helps finding this hidden options.

regards,
F.


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Re: [darktable-user] Lens Correction issues

[frieder]

Am Donnerstag, den 05.12.2019, 09:08 + schrieb Dusenberg:
> Hi
>
>
>
> Issue 1:
> My Nikon D810 automatically applies lens distortion correction so the
> raw files are already corrected for the lens in use.  I have Nikon
> AF-S lenses so this works consistently and accurately. However the
> camera does not correct for TCA.  For example, my 24-70 lens
> generally needs a red correction of 1.00020-1.00040 while my 70-200
> needs 1.00010-1.00030. I have to do this manually for every shot
> which is a pain and 'something else to do'. What I want is for DT to
> apply Lens Correction as part of my style so that lens and shot data
> of the current image is used but then only the TCA correction is
> applied with a preset value of say red:1.00030 for the 24-70 lens. I
> can then amend this if necessary during my normal workflow review of
> each image. I have tried and failed to do this.  The problem I find
> is that if I open LC in Darkroom, set it to TCA Only enter a
> correction and save as a preset, when I use that preset whether alone
> or as part of a style, LC no longer looks up the lens and shot data
> for the current image, but applies all the settings present during
> the creation of the preset - which means the wrong lens, f/stop,
> distance. I may be missing something obvious but I've no idea what it
> is.  Does anyone know how to do what I need?
>
When creating a new preset, it is possible to define to use it
automatically in some specific cases. Therefore one of the Options
in the naming-dialoque must be activated.
Activating one of the ceckboxes opens more Input fields whicht allows
to define this style automatically used for a specific lens.

I made a screeshot of the dialoque, albeit it is in german, I hope it
helps finding this hidden options.

regards,
F.


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[darktable-user] Lens Correction issues

[Dusenberg]

  
  
Hi
  
  Over last few months I've finally created a style which I can
  apply to all my landscape shots and which produces what I think
  are excellent images which usually need little or no manual
  attention.  A big thanks to all the developers - DT is a great
  piece of software.
  
  However I do have two issues with the Lens Correction module which
  I can't resolve and was hoping someone out there may know the
  answers.  I run DT 2.6.2 on a laptop with Linux Mint 19.1 Cinnamon
  (Ubuntu 18.4).
  
  Issue 1: 
  My Nikon D810 automatically applies lens distortion correction so
  the raw files are already corrected for the lens in use.  I have
  Nikon AF-S lenses so this works consistently and accurately.
  However the camera does not correct for TCA.  For example, my
  24-70 lens generally needs a red correction of 1.00020-1.00040
  while my 70-200 needs 1.00010-1.00030. I have to do this manually
  for every shot which is a pain and 'something else to do'. What I
  want is for DT to apply Lens Correction as part of my style so
  that lens and shot data of the current image is used but then only
  the TCA correction is applied with a preset value of say
  red:1.00030 for the 24-70 lens. I can then amend this if necessary
  during my normal workflow review of each image. I have tried and
  failed to do this.  The problem I find is that if I open LC in
  Darkroom, set it to TCA Only enter a correction and save as a
  preset, when I use that preset whether alone or as part of a
  style, LC no longer looks up the lens and shot data for the
  current image, but applies all the settings present during the
  creation of the preset - which means the wrong lens, f/stop,
  distance. I may be missing something obvious but I've no idea what
  it is.  Does anyone know how to do what I need?
  
  Issue 2:
  I have a Nikor AF-S 18-35mm f/3.5–4.5G ED lens which doesn't
  appear in Lensfun supported lenses list. However for TCA
  correction, the Nikkor AF-S 16-35mm f/4G ED entry in LC works
  satisfactorily. The problem is I can't find a way to get LC to use
  the 16-35mm lens entry instead of the as-shot lens.  Again, any
  ideas?
  
  Thanks


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Re: [darktable-user] lens correction

[Remco Viëtor]

On mardi 22 octobre 2019 04:26:45 CEST Michael wrote:
> my Sony FE 2.8/50 macro is not found in the lens correction module. What do
> I need to do to get it in the list of lenses?

Darktable uses Lensfun for the required correction parameters, see:
http://lensfun.sourceforge.net/calibration/

>From what I see there, your lens isn't in the database yet.

Remco



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[darktable-user] lens correction

[Michael]

my Sony FE 2.8/50 macro is not found in the lens correction module. What do
I need to do to get it in the list of lenses?

-- 
:-)~MIKE~(-:


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Re: [darktable-user] Lens Correction not scrolling list of lenses

[Paul Marfell]

I am interested in the solution to this. My Sigma 150-600 Contemporary is
not identified. It is in the list but not shown on screen and I can't
scroll to it. I have to put my mouse pointer on the last Sigma lens that is
being displayed and then press down arrow 5 times then "Enter". This then
selects my lens and sets the correction. A minor niggle in an application I
am growing to really like.

Paul

On Fri, 28 Jun 2019 at 23:33, Sheridan Price  wrote:

> Hi
> I'm using Windows 10 and DT 2.6.2.
>
> I'm trying to apply the lens Correction module but..it doesn't find my
> lens - specifically Nikon D80 camera and Nikon AF-S DX VR NIKKOR 55-200mm
> f/4-5.6 G IF-ED and doesn't allow me to scroll the lens list.
>
> In the correction module I left click on lens and get the menu of lens
> types "BelOMO through to Zenit" which I assume is the last one in the list
> as I can't scroll up or down here either, but Nikon shows up in the middle
> so I can either left click or hover and I get another scroll list now of
> lenses from NIKKOR AI-S 6mm... through to NIKKOR AF-S 24-85mm... Obviously
> my lens is not in the list shown but I can not scroll the list down into
> the 55mm lens to choose it or one close to it.
>
> This did work in 2.6.1
>
> Any help would be appreciated.
>
> Thanks muchly and you developers have created a great program.
>
> Regards
> Sheridan
>
> 
> darktable user mailing list to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>


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[darktable-user] Lens Correction not scrolling list of lenses

[Sheridan Price]

Hi
I'm using Windows 10 and DT 2.6.2.

I'm trying to apply the lens Correction module but..it doesn't find my lens
- specifically Nikon D80 camera and Nikon AF-S DX VR NIKKOR 55-200mm
f/4-5.6 G IF-ED and doesn't allow me to scroll the lens list.

In the correction module I left click on lens and get the menu of lens
types "BelOMO through to Zenit" which I assume is the last one in the list
as I can't scroll up or down here either, but Nikon shows up in the middle
so I can either left click or hover and I get another scroll list now of
lenses from NIKKOR AI-S 6mm... through to NIKKOR AF-S 24-85mm... Obviously
my lens is not in the list shown but I can not scroll the list down into
the 55mm lens to choose it or one close to it.

This did work in 2.6.1

Any help would be appreciated.

Thanks muchly and you developers have created a great program.

Regards
Sheridan


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[darktable-user] lens correction and shape of the masks

[Jean-Luc Coulon (f5ibh)]

 Hi
I've used a 14 mm Samyang lens on a Canon EOS 6D MkII to shoot the Milky
Way.
I've applied the lens corrections from darktable (in this case, distorsion
is relevant).

If I use thereafter a drawn mask with a gradient, the shape of the gradient
is curved the opposite way the correction is done.

i.e. the distorsion is basically a barrel.
And the curve of the gradient depends where I put it: it is straight in the
middle and concave in the lower or upper part of the picture.

This is quite annoying because I'm always chasing the right position of the
gradient.

Jean-Luc


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Re: [darktable-user] Lens correction setting

[Patrick Shanahan]

* jys  [02-24-19 18:26]:
> 
> 
> On Thu, Feb 21, 2019, at 08:47, fht233 wrote:
> 
> > It should only activate the correction if the lens is properly identified.
> > I dont know if there would be many 'false posives'. In case that you dont
> > want the correction applied for a concrete lens you can disable it for
> > those images, or remove the lens profile if posible. Or directly don't
> > activate the option "Apply lens correction by default".
> > 
> > In my experience with other software I have it always active and works for
> > most of my lenses, except one, what means that it works for 99% of the
> > images and saves time, in my case.
> > It was just a suggestion, maybe you are right and it is not such a good
> > idea. I understand also that DT tries to avoid doing things 'behind de
> > scenes' by default. But maybe could be a compromise that works.
> 
> I would suggest that at least enabling by default for fixed-lens cameras 
> would make sense, since there's no problem with lens ID ambiguity, and many 
> such cameras really need the correction to produce usable images (having been 
> designed with the assumption that it will be applied).

look under the presets for the module "Lens Correction"

-- 
(paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
Registered Linux User #207535@ http://linuxcounter.net
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Re: [darktable-user] Lens correction setting

[jys]

On Thu, Feb 21, 2019, at 08:47, fht233 wrote:

> It should only activate the correction if the lens is properly identified.
> I dont know if there would be many 'false posives'. In case that you dont
> want the correction applied for a concrete lens you can disable it for
> those images, or remove the lens profile if posible. Or directly don't
> activate the option "Apply lens correction by default".
> 
> In my experience with other software I have it always active and works for
> most of my lenses, except one, what means that it works for 99% of the
> images and saves time, in my case.
> It was just a suggestion, maybe you are right and it is not such a good
> idea. I understand also that DT tries to avoid doing things 'behind de
> scenes' by default. But maybe could be a compromise that works.

I would suggest that at least enabling by default for fixed-lens cameras would 
make sense, since there's no problem with lens ID ambiguity, and many such 
cameras really need the correction to produce usable images (having been 
designed with the assumption that it will be applied).

-- 
jys

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Re: [darktable-user] Lens correction setting

[Patrick Shanahan]

* Frank J.  [02-23-19 10:05]:
> Am 21.02.19 um 14:09 schrieb fht233:
> ...
> > This setting could be active by default (in my opinion) or not. I dont
> > know if this would have some negative effect in some cases.  I think
> > that other software and even some cameras do it by default to produce
> > the jpg.
> 
> +1
> 
> I put on "Lens Correction" manually for nearly every single picture.
> It would be an improvement to have a global option like
> 
>"Apply lens correction by default"
> 
>  - on new pictures while importing
> When
>  - Camera can be detected
>  - Lens can be detected
>  - Focus length can be detected.

posted to OP:
  
  you provide a lot of information about your desires, but sadly very
  little about your system or dt version.  iianm, what you desire is
  available and has been for some time.  there is a preset for the "lens
  correction" module, "Auto Apply Lens Correction" but you must set the
  module on perhaps using a style.  mine is on but forgive ancient memory
  I cannot see how.
  
  fwiw: openSUSE Tumbleweed
darktable git507.3a9b488eb
  
  
-- 
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http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
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Re: [darktable-user] Lens correction setting

[Patrick Shanahan]

* fht233  [01-01-70 12:34]:
> Hi, first of all I have to say that it is a great software and I like a
> lot.
> Regarding the topic, from my point of view as a relative new user I think
> that the lens correction topic could be a pain and makes the learning curve
> a bit more step.  In this case would be very helpful to have for example a
> setting somewhere: "Apply lens correction by default", (when posible to
> apply).
> This setting could be active by default (in my opinion) or not. I dont know
> if this would have some negative effect in some cases.  I think that other
> software and even some cameras do it by default to produce the jpg.
> The problem for a new user is that at some point you realize that the lens
> correction is not applied to any of your photos (at least it was my case).
> Then you click on the module and it works fine, great. But the next thing
> you expect is that it is active for all photos by default and not having to
> do it explicitily every session.
> Here you have to start investigating the documentation and googling, then
> you have to understand what are the presets, how to program one, etc. It
> works with new photos, great. But then you realize that it doesn't work for
> the existing photos, reimporting doesnt help.
> Some more googling and you understand that it is because those photos
> already had a sidecar and then the preset is not applied, good to know.
> Well, all together is a pain and I spent a lot of time for something that
> seems very basic.
> 
> Maybe it was already discussed or it is not a good idea But I think that a
> clear and understable setting would be easier than having to perform all
> the investigation and setting up things by yourself when you are not yet
> familiar with the software and the terms. Googling and finding 'activate
> the setting' would be easier than having to learn to set up the preset by
> yourself, IMHO.
> It is just an idea trying to help, maybe there are better options or it is
> not posible at all.
> Thanks!

you provide a lot of information about your desires, but sadly very little
about your system or dt version.  iianm, what you desire is available and
has been for some time.  there is a preset for the "lens correction"
module, "Auto Apply Lens Correction" but you must set the module on
perhaps using a style.  mine is on but forgive ancient memory I cannot see
how.

fwiw: openSUSE Tumbleweed
  darktable git507.3a9b488eb
  
-- 
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http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
Registered Linux User #207535@ http://linuxcounter.net
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Re: [darktable-user] Lens correction setting

[Frank J.]

Am 21.02.19 um 14:09 schrieb fht233:
...
This setting could be active by default (in my opinion) or not. I dont 
know if this would have some negative effect in some cases.  I think 
that other software and even some cameras do it by default to produce 
the jpg.


+1

I put on "Lens Correction" manually for nearly every single picture.
It would be an improvement to have a global option like

   "Apply lens correction by default"

 - on new pictures while importing
When
 - Camera can be detected
 - Lens can be detected
 - Focus length can be detected.

--
Frank

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Re: [darktable-user] lens correction presets/styles when using zoom lenses

[Florian Pressler]

On Fri, Feb 22, 2019 at 8:06 PM jys  wrote:

>
> It may not matter to you, but it does break the auto-selection on the
> darktable module. Fortunately, the camera is in the latest update available
> with lensfun-update-data... if for some reason you can't use that utility,
> the attached xml file contains only that profile, and should go wherever
> lensfun profiles live on your system (~/.local/share/lensfun on linux, and
> I believe darktable/lensfun on Windows).
>
> As you've found, the presets on that module don't play nicely with
> auto-selection... if that module ever gets some love from developers, that
> might be something that could be improved. :)
>

Thanks for that clarification. I will look into your advice regarding
updating the lensfun-db, it sounds promising. Regarding the functionality
of darktable I understand it like this: it means that "auto-selection" is
only possible when everything (camera, lens, focal length) is all
auto-selected. It seems to be impossible to set certian aspects manually
and for example then let darktable only auto-select the focal length. There
might be use-cases where this could be useful and an update of the
lensfun-db is out of question.


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Re: [darktable-user] lens correction presets/styles when using zoom lenses

[David Vincent-Jones]

Running 'lensfun-update' should bring in the most recent cameras  on 
Linux anyway


On 2019-02-22 11:05 a.m., jys wrote:

On Fri, Feb 22, 2019, at 09:50, Florian Pressler wrote:


The situation: I would like to automatically apply lens correction to my
pictures taken with a certain zoom lens (Sony, FE 24-105mm F4 G OSS). The
lens is being automatically recognized by darktable and set when activating
the module. The camera is *not* automatically detected, as it's a quite new
model (Sony, Alpha 7 III) and not yet in the database. It doesn't matter to
me, I can select its predecessor (Sony, Alpha 7 II), which works equally
fine.

It may not matter to you, but it does break the auto-selection on the darktable 
module. Fortunately, the camera is in the latest update available with 
lensfun-update-data... if for some reason you can't use that utility, the 
attached xml file contains only that profile, and should go wherever lensfun 
profiles live on your system (~/.local/share/lensfun on linux, and I believe 
darktable/lensfun on Windows).

As you've found, the presets on that module don't play nicely with 
auto-selection... if that module ever gets some love from developers, that 
might be something that could be improved. :)




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Re: [darktable-user] lens correction presets/styles when using zoom lenses

[jys]

On Fri, Feb 22, 2019, at 09:50, Florian Pressler wrote:

> The situation: I would like to automatically apply lens correction to my
> pictures taken with a certain zoom lens (Sony, FE 24-105mm F4 G OSS). The
> lens is being automatically recognized by darktable and set when activating
> the module. The camera is *not* automatically detected, as it's a quite new
> model (Sony, Alpha 7 III) and not yet in the database. It doesn't matter to
> me, I can select its predecessor (Sony, Alpha 7 II), which works equally
> fine.

It may not matter to you, but it does break the auto-selection on the darktable 
module. Fortunately, the camera is in the latest update available with 
lensfun-update-data... if for some reason you can't use that utility, the 
attached xml file contains only that profile, and should go wherever lensfun 
profiles live on your system (~/.local/share/lensfun on linux, and I believe 
darktable/lensfun on Windows).

As you've found, the presets on that module don't play nicely with 
auto-selection... if that module ever gets some love from developers, that 
might be something that could be improved. :)

-- 
jys


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Sony
ILCE-7M3
Alpha 7 III
Sony E
1

[darktable-user] lens correction presets/styles when using zoom lenses

[Florian Pressler]

Hello,

I have a question that seems to have been covered already a few times on
this list. But actually, still after much reading and experimenting, I
cannot bring this to work properly.

The situation: I would like to automatically apply lens correction to my
pictures taken with a certain zoom lens (Sony, FE 24-105mm F4 G OSS). The
lens is being automatically recognized by darktable and set when activating
the module. The camera is *not* automatically detected, as it's a quite new
model (Sony, Alpha 7 III) and not yet in the database. It doesn't matter to
me, I can select its predecessor (Sony, Alpha 7 II), which works equally
fine.

One tool to use for that are module-presets. If I create a preset where I
just have set the camera model (I didn't touch any other setting) and apply
it to other pictures, the focal length is also saved in the preset and
(often incorrectly) copied over to the new pictures. So this is not a
solution, as I have to manually select the correct focal length for any
picture! In my tests, it didn't matter whether I auto-applied this preset
upon importing or if I applied it manually.

The other tool to achieve the goal are styles. Here I try again - turn on
lens correction. I don't touch any setting, except I set the camera. I save
the style. As soon as I apply the style to other pictures, the (wrong)
focal length is also set.

The only workaround-solution which comes up to my mind is create many
module-presets, each only matching one certain focal-length. And each has
the respective focal-length set correctly. This cannot be, can it? :-)

Any advice very much appreciated,
Florian


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Re: [darktable-user] Lens correction setting

[fht233]

On Thu, Feb 21, 2019 at 2:45 PM Remco Viëtor 
wrote:

> On jeudi 21 février 2019 14:09:53 CET fht233 wrote:
> > Hi, first of all I have to say that it is a great software and I like a
> > lot.
> (... long explanation about how any module works)
> >
> > Maybe it was already discussed or it is not a good idea But I think that
> a
> > clear and understable setting would be easier than having to perform all
> > the investigation and setting up things by yourself when you are not yet
> > familiar with the software and the terms. Googling and finding 'activate
> > the setting' would be easier than having to learn to set up the preset by
> > yourself, IMHO.
>
> The lens correction module works like almost any other module (exceptions
> are modules that are absolutely needed for raw files, like demosaic).
> I found the darktable documentation very complete, not only the manual,
> but
> also the other info accessible through the Darktable web site. Presets are
> described in section 8.5, btw.
>
No doubt about it.


> As in most programs, changed automatic presets are only applied to newly
> imported items. Good thing too, as (with Darktable) you might want to
> change
> the presets when you change camera (body/brand/lens/...). In your case,
> say
> you decide to change one of your lenses for a newer model, with
> *different*
> distorsion parameters. Do you really want that autoapplied to older
> images?
>
If you change the lens I assume that it would be identified as another
version. But ok, you are right that it is not a good idea in general. And
it was not my point anyway.

There is another catch with the lens correction module, related to the way
> lenses are identified. The lens identification in the metadata is based on
> an
> ID value provided by the lens. This value is NOT unique between brands, so
> a
> given value can refer to several lenses. Also, cameras don't necessarily
> know
> all ID values possible (esp. for 3rd party lenses), which means the lens
> identification is uncertain.
> Then there is the possibility of extender rings, focal multipliers,
> converters, ...
>
Yes, this is true, it wont always work.  My point was to try to make things
easier to most users and most of the cases, that of course I don't know if
this would be always true.  The lens I have tried are identified properly
with brand and model and it works pretty fine.

>
> Darktable/Lensfun just have no way to figure out which lens you have used
> beyond the image metadata...
> In my case (mostly 3rd party lenses), I have to specify the lens used 'by
> hand', and in most cases distortion correction is just not needed. So I
> don't
> need that module activated by default.
>
It should only activate the correction if the lens is properly identified.
I dont know if there would be many 'false posives'. In case that you dont
want the correction applied for a concrete lens you can disable it for
those images, or remove the lens profile if posible. Or directly don't
activate the option "Apply lens correction by default".

In my experience with other software I have it always active and works for
most of my lenses, except one, what means that it works for 99% of the
images and saves time, in my case.
It was just a suggestion, maybe you are right and it is not such a good
idea. I understand also that DT tries to avoid doing things 'behind de
scenes' by default. But maybe could be a compromise that works.

>
> Remco
>
>
> 
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>


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Re: [darktable-user] Lens correction setting

[Remco Viëtor]

On jeudi 21 février 2019 14:09:53 CET fht233 wrote:
> Hi, first of all I have to say that it is a great software and I like a
> lot.
(... long explanation about how any module works)
> 
> Maybe it was already discussed or it is not a good idea But I think that a
> clear and understable setting would be easier than having to perform all
> the investigation and setting up things by yourself when you are not yet
> familiar with the software and the terms. Googling and finding 'activate
> the setting' would be easier than having to learn to set up the preset by
> yourself, IMHO.

The lens correction module works like almost any other module (exceptions 
are modules that are absolutely needed for raw files, like demosaic).

I found the darktable documentation very complete, not only the manual, but 
also the other info accessible through the Darktable web site. Presets are 
described in section 8.5, btw.

As in most programs, changed automatic presets are only applied to newly 
imported items. Good thing too, as (with Darktable) you might want to change 
the presets when you change camera (body/brand/lens/...). In your case, say 
you decide to change one of your lenses for a newer model, with *different* 
distorsion parameters. Do you really want that autoapplied to older images?


There is another catch with the lens correction module, related to the way 
lenses are identified. The lens identification in the metadata is based on an 
ID value provided by the lens. This value is NOT unique between brands, so a 
given value can refer to several lenses. Also, cameras don't necessarily know 
all ID values possible (esp. for 3rd party lenses), which means the lens 
identification is uncertain. 
Then there is the possibility of extender rings, focal multipliers, 
converters, ...

Darktable/Lensfun just have no way to figure out which lens you have used 
beyond the image metadata...
In my case (mostly 3rd party lenses), I have to specify the lens used 'by 
hand', and in most cases distortion correction is just not needed. So I don't 
need that module activated by default.

Remco



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[darktable-user] Lens correction setting

[fht233]

Hi, first of all I have to say that it is a great software and I like a
lot.
Regarding the topic, from my point of view as a relative new user I think
that the lens correction topic could be a pain and makes the learning curve
a bit more step.  In this case would be very helpful to have for example a
setting somewhere: "Apply lens correction by default", (when posible to
apply).
This setting could be active by default (in my opinion) or not. I dont know
if this would have some negative effect in some cases.  I think that other
software and even some cameras do it by default to produce the jpg.
The problem for a new user is that at some point you realize that the lens
correction is not applied to any of your photos (at least it was my case).
Then you click on the module and it works fine, great. But the next thing
you expect is that it is active for all photos by default and not having to
do it explicitily every session.
Here you have to start investigating the documentation and googling, then
you have to understand what are the presets, how to program one, etc. It
works with new photos, great. But then you realize that it doesn't work for
the existing photos, reimporting doesnt help.
Some more googling and you understand that it is because those photos
already had a sidecar and then the preset is not applied, good to know.
Well, all together is a pain and I spent a lot of time for something that
seems very basic.

Maybe it was already discussed or it is not a good idea But I think that a
clear and understable setting would be easier than having to perform all
the investigation and setting up things by yourself when you are not yet
familiar with the software and the terms. Googling and finding 'activate
the setting' would be easier than having to learn to set up the preset by
yourself, IMHO.
It is just an idea trying to help, maybe there are better options or it is
not posible at all.
Thanks!


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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Michael Rasmussen]

On Thu, 8 Feb 2018 17:43:26 -0500
Šarūnas  wrote:

> 
> Does running `lensfun-update-data` make a difference? (It is provided by
> the liblensfun-bin package.)
> 
Running the command above gives (among others):

Canon
Canon PowerShot G7
PowerShot G7
canonG7
4.843


Canon
Canon PowerShot G7 X
PowerShot G7 X (3:2)
canonG7X
2.72


Canon
Canon PowerShot G7 X 4:3
PowerShot G7 X (4:3)
canonG7X
2.94


Canon
Canon PowerShot G7 X 16:9
PowerShot G7 X (16:9)
canonG7X
2.85


Canon
Canon PowerShot G7 X Mark II
PowerShot G7 X Mark II (3:2)
canonG7X
2.72


Canon
Canon PowerShot G7 X Mark II 4:3
PowerShot G7 X Mark II (4:3)
canonG7X
2.94


Canon
Canon PowerShot G7 X Mark II 16:9
PowerShot G7 X Mark II (16:9)
canonG7X
2.85


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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Michael Rasmussen]

On Thu, 8 Feb 2018 19:00:17 -0500
Patrick Shanahan  wrote:

> 
> seems it would be simple to do.  have you tried?
> 
Fetches latest camera and lens corrections used in DT. Run the command
as root to install system wide or runs as user to install for running
user.

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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Patrick Shanahan]

* Šarūnas  [02-08-18 17:46]:
> On 02/08/2018 04:34 PM, Michael Rasmussen wrote:
> > Hi Tanja,
> > 
> > I have posted this to the list as well so that other readers can follow
> > the discussion.
> > 
> > The reason behind the older version of the library on your installation
> > is because you a running latest LTS version from Ubuntu while I am
> > running Debian Unstable which means the version of my libraries are the
> > latest versions that are not considered experimental. But since you
> > have the library installed this is not the reason for your problem.
> > 
> > On Thu, 8 Feb 2018 21:28:29 +0100
> > "Tanja Etzelstorfer"  wrote:
> > 
> >> Hi Michael!
> >>  
> >> The dpkg command gives the following output:
> >>  
> >> liblensfun-data                    install
> >> liblensfun0                    install
> >>  
> >> seems this is an older version..
> 
> Does running `lensfun-update-data` make a difference? (It is provided by
> the liblensfun-bin package.)

seems it would be simple to do.  have you tried?



-- 
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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Šarūnas]

On 02/08/2018 04:34 PM, Michael Rasmussen wrote:
> Hi Tanja,
> 
> I have posted this to the list as well so that other readers can follow
> the discussion.
> 
> The reason behind the older version of the library on your installation
> is because you a running latest LTS version from Ubuntu while I am
> running Debian Unstable which means the version of my libraries are the
> latest versions that are not considered experimental. But since you
> have the library installed this is not the reason for your problem.
> 
> On Thu, 8 Feb 2018 21:28:29 +0100
> "Tanja Etzelstorfer"  wrote:
> 
>> Hi Michael!
>>  
>> The dpkg command gives the following output:
>>  
>> liblensfun-data                    install
>> liblensfun0                    install
>>  
>> seems this is an older version..

Does running `lensfun-update-data` make a difference? (It is provided by
the liblensfun-bin package.)

-- 
Šarūnas Burdulis
math.dartmouth.edu/~sarunas



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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Michael Rasmussen]

Hi Tanja,

I have posted this to the list as well so that other readers can follow
the discussion.

The reason behind the older version of the library on your installation
is because you a running latest LTS version from Ubuntu while I am
running Debian Unstable which means the version of my libraries are the
latest versions that are not considered experimental. But since you
have the library installed this is not the reason for your problem.

On Thu, 8 Feb 2018 21:28:29 +0100
"Tanja Etzelstorfer" <tanj...@gmx.at> wrote:

> Hi Michael!
>  
> The dpkg command gives the following output:
>  
> liblensfun-data                    install
> liblensfun0                    install
>  
> seems this is an older version..
>  
>  
>  
> Gesendet: Donnerstag, 08. Februar 2018 um 18:33 Uhr
> Von: "Michael Rasmussen" <m...@miras.org>
> An: darktable-user@lists.darktable.org
> Betreff: Re: [darktable-user] lens correction for Canon Powershot G7 X under 
> darktable 2.4.1 and Ubuntu 16.04 LTS
> On Thu, 8 Feb 2018 18:21:05 +0100
> "Tanja Etzelstorfer" <tanj...@gmx.at> wrote:
> 
> >  
> > All help is higly appreciated! :)
> if you run this commamd: dpkg --get-selections |grep liblens
> 
> Do you get this output?
> 
> liblensfun-data-v1 install
> liblensfun1:amd64 install
> 
> dpkg -s liblensfun-data-v1
> 
> Description: Lens Correction library - Data
> Lensfun is an opensource database of photographic lenses and their
> characteristics. It contains three kinds of objects:
> * mounts
> * cameras
> * lenses
> .
> It is used in various photo-related software in which it allows the
> correction of various artifacts:
> * distortion
> * transveral (also known as lateral) chromatic aberrations
> * vignetting
> * colour contribution of the lens (correcting said "yellowish" or "blueish"
> images)
> 
> 
> --
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> Michael Rasmussen
> 
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Re: [darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Michael Rasmussen]

On Thu, 8 Feb 2018 18:21:05 +0100
"Tanja Etzelstorfer"  wrote:

>  
> All help is higly appreciated! :)
if you run this commamd: dpkg --get-selections |grep liblens

Do you get this output?

liblensfun-data-v1  install
liblensfun1:amd64   install

dpkg -s liblensfun-data-v1

Description: Lens Correction library - Data
 Lensfun is an opensource database of photographic lenses and their
 characteristics. It contains three kinds of objects:
  * mounts
  * cameras
  * lenses
 .
 It is used in various photo-related software in which it allows the
 correction of various artifacts:
  * distortion
  * transveral (also known as lateral) chromatic aberrations
  * vignetting
  * colour contribution of the lens (correcting said "yellowish" or "blueish"
images)


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[darktable-user] lens correction for Canon Powershot G7 X under darktable 2.4.1 and Ubuntu 16.04 LTS

[Tanja Etzelstorfer]

Hi all!

 

I hope this is the correct environment for my question:

 

When importing the RAW files from my Canon Powershot G7 X (.CR2) they appear strange. It seems the aperture is visible and also some strange cropping/zoom.. I googled a lot and came up with the idea that probably the lens profile is not correct. And really, under darktable 2.4.1 running on Ubuntu, the profile for Canon Powershot G7 X is missing. Under windows and darktable 2.4.1 the profile is there.

How can I import the correct lens profile under Ubuntu?

 

All help is higly appreciated! :)

Best,

Tanja


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[darktable-user] lens correction in darktable 2.4.0rc2

[justa]

Hi,

my system:

Intel® Core™ i5-3570K CPU @ 3.40GHz × 4 and a AMD RX560 Radeon MSI 4GB. 
Ubuntu Gnome 16.04.3 LTS 64-Bi


The ppa of Dariusz Duma for other tools on the system with darktable 
2.4.0rc2 is installed.


I use 2 versions of darktable on two systems:  1- 2.2.5 without opencl  
and no additional driver and 2- 2.4.0rc2 with opencl and amdgpu-pro-17.50


the camera I use is a Fuji X-E1 and the standard zoom XF18-55mmF2.8-4 R 
LM OIS.


In the first version 2.2.5 I have an automatic lens correction when I 
switch the modul on, in the 2.4.0rc2 version nothing happens.



Robert






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Re: Fwd: [darktable-user] Lens correction

[Michael Born]

Am 13.10.2017 um 14:09 schrieb Rohn Shearer:
> I'm new to this list, so I apologize if I am doing something wrong here.
> I'm also new to DT & this is the first I've heard of lensfun. Is there
> anything I need to do other than install the lensfun packages to get DT
> to use them?

No. That should already do it.
If your lens or camera is not yet supported -> check the lensfun online
database as suggested in this thread.
To update lensfun to use that latest data, use the lensfun-update-data
tool that you might need to install (in OpenSUSE it is in the
lensfun-tools package that you can install with yast or zypper or rpm or
whatever).

Cheers,
Michael

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Fwd: [darktable-user] Lens correction

[Rohn Shearer]

I'm new to this list, so I apologize if I am doing something wrong here.
I'm also new to DT & this is the first I've heard of lensfun. Is there
anything I need to do other than install the lensfun packages to get DT to
use them?

Rohn
-- Forwarded message --
From: David Vincent-Jones <david...@gmail.com>
Date: Thu, Oct 12, 2017 at 8:40 PM
Subject: Re: [darktable-user] Lens correction
To: darktable-user@lists.darktable.org


Had no idea that it would be that simple ... fully functional .. thank you

David

On 10/12/2017 05:24 PM, junkyardspar...@yepmail.net wrote:
>
>
> On Thu, Oct 12, 2017, at 16:08, Roman Lebedev wrote:
>> On Fri, Oct 13, 2017 at 2:05 AM, David Vincent-Jones <david...@gmail.com>
wrote:
>>> My lens is included in the current lensfun coverage but does not display
>>> in the dt listing ... do I just wait for dt to update to the latest
>>> lensfun version?
>>
>> dt does *not* bundle those correction.
>> Depending on your lensfun version, lensfun-update-data tool may help you.
>> Otherwise, bug the lensfun in your distributions bugtracker.
>
> Maybe you don't want to wait around for the next lensfun version to be
packaged, either, so...
>
> Did you try, as suggested by others, to install the "lensfun-tools"
package, by whatever method you normally use for package management? It
sounds like this is how your distro provides the "lensfun-update-data"
script. If you then run that script from a terminal, it *should*, with any
luck, download the newest version of the lens database used by lensfun (and
by extension, darktable). If you run the script as root, it will attempt to
install to the system database location, otherwise to your user directory.
Watch the output in the terminal, it will tell you whether things are
working or not. If it works, great! If it doesn't, report back with the
error message.
>

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Re: [darktable-user] Lens correction

[David Vincent-Jones]

Had no idea that it would be that simple ... fully functional .. thank you

David

On 10/12/2017 05:24 PM, junkyardspar...@yepmail.net wrote:
> 
> 
> On Thu, Oct 12, 2017, at 16:08, Roman Lebedev wrote:
>> On Fri, Oct 13, 2017 at 2:05 AM, David Vincent-Jones  
>> wrote:
>>> My lens is included in the current lensfun coverage but does not display
>>> in the dt listing ... do I just wait for dt to update to the latest
>>> lensfun version?
>>
>> dt does *not* bundle those correction.
>> Depending on your lensfun version, lensfun-update-data tool may help you.
>> Otherwise, bug the lensfun in your distributions bugtracker.
> 
> Maybe you don't want to wait around for the next lensfun version to be 
> packaged, either, so...
> 
> Did you try, as suggested by others, to install the "lensfun-tools" package, 
> by whatever method you normally use for package management? It sounds like 
> this is how your distro provides the "lensfun-update-data" script. If you 
> then run that script from a terminal, it *should*, with any luck, download 
> the newest version of the lens database used by lensfun (and by extension, 
> darktable). If you run the script as root, it will attempt to install to the 
> system database location, otherwise to your user directory. Watch the output 
> in the terminal, it will tell you whether things are working or not. If it 
> works, great! If it doesn't, report back with the error message.
> 

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Re: [darktable-user] Lens correction

[junkyardsparkle]

On Thu, Oct 12, 2017, at 16:08, Roman Lebedev wrote:
> On Fri, Oct 13, 2017 at 2:05 AM, David Vincent-Jones  
> wrote:
> > My lens is included in the current lensfun coverage but does not display
> > in the dt listing ... do I just wait for dt to update to the latest
> > lensfun version?
>
> dt does *not* bundle those correction.
> Depending on your lensfun version, lensfun-update-data tool may help you.
> Otherwise, bug the lensfun in your distributions bugtracker.

Maybe you don't want to wait around for the next lensfun version to be 
packaged, either, so...

Did you try, as suggested by others, to install the "lensfun-tools" package, by 
whatever method you normally use for package management? It sounds like this is 
how your distro provides the "lensfun-update-data" script. If you then run that 
script from a terminal, it *should*, with any luck, download the newest version 
of the lens database used by lensfun (and by extension, darktable). If you run 
the script as root, it will attempt to install to the system database location, 
otherwise to your user directory. Watch the output in the terminal, it will 
tell you whether things are working or not. If it works, great! If it doesn't, 
report back with the error message.

-- 
jys

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Re: [darktable-user] Lens correction

[Roman Lebedev]

On Fri, Oct 13, 2017 at 2:05 AM, David Vincent-Jones  wrote:
> My lens is included in the current lensfun coverage but does not display
> in the dt listing ... do I just wait for dt to update to the latest
> lensfun version?
dt does *not* bundle those correction.
Depending on your lensfun version, lensfun-update-data tool may help you.
Otherwise, bug the lensfun in your distributions bugtracker.

> David
Roman.

> On 10/11/2017 04:19 PM, Robert Krawitz wrote:
>> On Wed, 11 Oct 2017 15:53:28 -0700, David Vincent-Jones wrote:
>>> Michael ... pls hold my hand on this one. I am running OpenSUSE but do
>>> not see 'lensfun-update-data' on my system
>>
>> zypper install lensfun-tools
>>
>>> On 10/11/2017 03:48 PM, Michael Born wrote:
 Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
> My lens is shown on the Lensfun Coverage but does not appear on the dt
> drop-down list ... is there an easy fix to this?

 Do you have a
 lensfun-update-data
 ?
 In OpenSUSE this is in the lensfun-tools package.

 Cheers,
 Michael

>
> On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
>> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
>>> Norman ... thanks for that, I was assuming that the 'arrow thing' would
>>> open the list as is a normal case.  so, problem solved, thanks
>>>
>>> I guess that eventually my camera and lens will be added to the list!!
>>
>> See http://wilson.bronger.org/calibration for how to make that happen.
>>
> 
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>

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Re: [darktable-user] Lens correction

[David Vincent-Jones]

My lens is included in the current lensfun coverage but does not display
in the dt listing ... do I just wait for dt to update to the latest
lensfun version?

David

On 10/11/2017 04:19 PM, Robert Krawitz wrote:
> On Wed, 11 Oct 2017 15:53:28 -0700, David Vincent-Jones wrote:
>> Michael ... pls hold my hand on this one. I am running OpenSUSE but do
>> not see 'lensfun-update-data' on my system
> 
> zypper install lensfun-tools
> 
>> On 10/11/2017 03:48 PM, Michael Born wrote:
>>> Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
 My lens is shown on the Lensfun Coverage but does not appear on the dt
 drop-down list ... is there an easy fix to this?
>>>
>>> Do you have a
>>> lensfun-update-data
>>> ?
>>> In OpenSUSE this is in the lensfun-tools package.
>>>
>>> Cheers,
>>> Michael
>>>

 On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
>> Norman ... thanks for that, I was assuming that the 'arrow thing' would
>> open the list as is a normal case.  so, problem solved, thanks
>>
>> I guess that eventually my camera and lens will be added to the list!!
>
> See http://wilson.bronger.org/calibration for how to make that happen.
> 

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Re: [darktable-user] Lens correction

[Robert Krawitz]

On Wed, 11 Oct 2017 15:53:28 -0700, David Vincent-Jones wrote:
> Michael ... pls hold my hand on this one. I am running OpenSUSE but do
> not see 'lensfun-update-data' on my system

zypper install lensfun-tools

> On 10/11/2017 03:48 PM, Michael Born wrote:
>> Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
>>> My lens is shown on the Lensfun Coverage but does not appear on the dt
>>> drop-down list ... is there an easy fix to this?
>> 
>> Do you have a
>> lensfun-update-data
>> ?
>> In OpenSUSE this is in the lensfun-tools package.
>> 
>> Cheers,
>> Michael
>> 
>>>
>>> On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
 On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
> Norman ... thanks for that, I was assuming that the 'arrow thing' would
> open the list as is a normal case.  so, problem solved, thanks
>
> I guess that eventually my camera and lens will be added to the list!!

 See http://wilson.bronger.org/calibration for how to make that happen.

-- 
Robert Krawitz 

***  MIT Engineers   A Proud Tradition   http://mitathletics.com  ***
Member of the League for Programming Freedom  --  http://ProgFree.org
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Re: [darktable-user] Lens correction

[David Vincent-Jones]

I have installed the lensfun package from OpenSUSE but no idea how to go
from there

David

On 10/11/2017 03:48 PM, Michael Born wrote:
> Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
>> My lens is shown on the Lensfun Coverage but does not appear on the dt
>> drop-down list ... is there an easy fix to this?
> 
> Do you have a
> lensfun-update-data
> ?
> In OpenSUSE this is in the lensfun-tools package.
> 
> Cheers,
> Michael
> 
>>
>> On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
>>> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
 Norman ... thanks for that, I was assuming that the 'arrow thing' would
 open the list as is a normal case.  so, problem solved, thanks

 I guess that eventually my camera and lens will be added to the list!!
>>>
>>> See http://wilson.bronger.org/calibration for how to make that happen.
>>>
>> 
>> darktable user mailing list
>> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
>>
>>
> 
> 
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> 

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Re: [darktable-user] Lens correction

[David Vincent-Jones]

Michael ... pls hold my hand on this one. I am running OpenSUSE but do
not see 'lensfun-update-data' on my system

Cheers;
David

On 10/11/2017 03:48 PM, Michael Born wrote:
> Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
>> My lens is shown on the Lensfun Coverage but does not appear on the dt
>> drop-down list ... is there an easy fix to this?
> 
> Do you have a
> lensfun-update-data
> ?
> In OpenSUSE this is in the lensfun-tools package.
> 
> Cheers,
> Michael
> 
>>
>> On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
>>> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
 Norman ... thanks for that, I was assuming that the 'arrow thing' would
 open the list as is a normal case.  so, problem solved, thanks

 I guess that eventually my camera and lens will be added to the list!!
>>>
>>> See http://wilson.bronger.org/calibration for how to make that happen.
>>>
>> 
>> darktable user mailing list
>> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
>>
>>
> 
> 
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> 

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Re: [darktable-user] Lens correction

[Michael Born]

Am 11.10.2017 um 23:56 schrieb David Vincent-Jones:
> My lens is shown on the Lensfun Coverage but does not appear on the dt
> drop-down list ... is there an easy fix to this?

Do you have a
lensfun-update-data
?
In OpenSUSE this is in the lensfun-tools package.

Cheers,
Michael

> 
> On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
>> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
>>> Norman ... thanks for that, I was assuming that the 'arrow thing' would
>>> open the list as is a normal case.  so, problem solved, thanks
>>>
>>> I guess that eventually my camera and lens will be added to the list!!
>>
>> See http://wilson.bronger.org/calibration for how to make that happen.
>>
> 
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> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
> 
> 


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Re: [darktable-user] Lens correction

[David Vincent-Jones]

My lens is shown on the Lensfun Coverage but does not appear on the dt
drop-down list ... is there an easy fix to this?

On 10/11/2017 01:06 PM, junkyardspar...@yepmail.net wrote:
> On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
>> Norman ... thanks for that, I was assuming that the 'arrow thing' would
>> open the list as is a normal case.  so, problem solved, thanks
>>
>> I guess that eventually my camera and lens will be added to the list!!
> 
> See http://wilson.bronger.org/calibration for how to make that happen.
> 

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Re: [darktable-user] Lens correction

[junkyardsparkle]

On Wed, Oct 11, 2017, at 09:34, David Vincent-Jones wrote:
> Norman ... thanks for that, I was assuming that the 'arrow thing' would
> open the list as is a normal case.  so, problem solved, thanks
> 
> I guess that eventually my camera and lens will be added to the list!!

See http://wilson.bronger.org/calibration for how to make that happen.

-- 
jys

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Re: [darktable-user] Lens correction

[David Vincent-Jones]

Norman ... thanks for that, I was assuming that the 'arrow thing' would
open the list as is a normal case.  so, problem solved, thanks

I guess that eventually my camera and lens will be added to the list!!

David

On 10/11/2017 09:28 AM, Normand Fortier wrote:
> Did you try clicking on the text just to the left of the "drop-down
> point"? If I do that I get the choice of bodies or lenses whereas
> clicking on the dot or arrow to the right does not.
> 
> Normand Fortier
> 
> Le 2017-10-11 à 12:11, David Vincent-Jones a écrit :
>> The drop-down points for both the camera and the lens do not work at all
>> so nothing can be selected. The "select manually" message does not make
>> sense.
>>
>> I suspect that something is not working on this version.
>>
>> On 10/11/2017 02:39 AM, Tobias Ellinghaus wrote:
>>> Am Dienstag, 10. Oktober 2017, 23:18:39 CEST schrieb David
>>> Vincent-Jones:
 darktable 2.3.0~git975.117e1358c-298.4
 Camera Fujifilm X-Pro2 with XF23mmF2 WR

 My lens is correctly shown but the module indicates that
 "camera/lens not found-please select manually"

 There is no drop-down list available and all the corrections are
 grayed-out.
>>>
>>> Maybe you have to select the camera in the upper field first?
>>>
 Lower line indicates "corrections done"

 ? .. are corrections done? The 'not-found' message is misleading.

 David
 

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 darktable-user+unsubscr...@lists.darktable.org
>>>
>> 
>>
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> 
> 
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Re: [darktable-user] Lens correction

[Normand Fortier]

Did you try clicking on the text just to the left of the "drop-down 
point"? If I do that I get the choice of bodies or lenses whereas 
clicking on the dot or arrow to the right does not.


Normand Fortier

Le 2017-10-11 à 12:11, David Vincent-Jones a écrit :

The drop-down points for both the camera and the lens do not work at all
so nothing can be selected. The "select manually" message does not make
sense.

I suspect that something is not working on this version.

On 10/11/2017 02:39 AM, Tobias Ellinghaus wrote:

Am Dienstag, 10. Oktober 2017, 23:18:39 CEST schrieb David Vincent-Jones:

darktable 2.3.0~git975.117e1358c-298.4
Camera Fujifilm X-Pro2 with XF23mmF2 WR

My lens is correctly shown but the module indicates that
"camera/lens not found-please select manually"

There is no drop-down list available and all the corrections are grayed-out.


Maybe you have to select the camera in the upper field first?


Lower line indicates "corrections done"

? .. are corrections done? The 'not-found' message is misleading.

David

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Re: [darktable-user] Lens correction

[David Vincent-Jones]

The drop-down points for both the camera and the lens do not work at all
so nothing can be selected. The "select manually" message does not make
sense.

I suspect that something is not working on this version.

On 10/11/2017 02:39 AM, Tobias Ellinghaus wrote:
> Am Dienstag, 10. Oktober 2017, 23:18:39 CEST schrieb David Vincent-Jones:
>> darktable 2.3.0~git975.117e1358c-298.4
>> Camera Fujifilm X-Pro2 with XF23mmF2 WR
>>
>> My lens is correctly shown but the module indicates that
>> "camera/lens not found-please select manually"
>>
>> There is no drop-down list available and all the corrections are grayed-out.
> 
> Maybe you have to select the camera in the upper field first?
> 
>> Lower line indicates "corrections done"
>>
>> ? .. are corrections done? The 'not-found' message is misleading.
>>
>> David
>> 
>> darktable user mailing list
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> 

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Re: [darktable-user] Lens correction

[Tobias Ellinghaus]

Am Dienstag, 10. Oktober 2017, 23:18:39 CEST schrieb David Vincent-Jones:
> darktable 2.3.0~git975.117e1358c-298.4
> Camera Fujifilm X-Pro2 with XF23mmF2 WR
> 
> My lens is correctly shown but the module indicates that
> "camera/lens not found-please select manually"
> 
> There is no drop-down list available and all the corrections are grayed-out.

Maybe you have to select the camera in the upper field first?

> Lower line indicates "corrections done"
> 
> ? .. are corrections done? The 'not-found' message is misleading.
> 
> David
> 
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Re: [darktable-user] Lens correction

[junkyardsparkle]

On Tue, Oct 10, 2017, at 23:18, David Vincent-Jones wrote:
> darktable 2.3.0~git975.117e1358c-298.4
> Camera Fujifilm X-Pro2 with XF23mmF2 WR
> 
> My lens is correctly shown but the module indicates that
> "camera/lens not found-please select manually"
> 
> There is no drop-down list available and all the corrections are grayed-out.
> 
> Lower line indicates "corrections done"
> 
> ? .. are corrections done? The 'not-found' message is misleading.

After the "corrections done:" should be shown some combination of "distortion", 
"TCA", and "vignetting", or "all" if that's the case.  If there's no profile 
for the lens, nothing is shown in that field... maybe it would make sense for 
"none" to be shown instead, as it is for lenses for which a profile exists, but 
when "none" is selected in the dropdown. What lens are you trying to correct?

-- 
jys

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[darktable-user] Lens correction

[David Vincent-Jones]

darktable 2.3.0~git975.117e1358c-298.4
Camera Fujifilm X-Pro2 with XF23mmF2 WR

My lens is correctly shown but the module indicates that
"camera/lens not found-please select manually"

There is no drop-down list available and all the corrections are grayed-out.

Lower line indicates "corrections done"

? .. are corrections done? The 'not-found' message is misleading.

David

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Re: [darktable-user] lens correction for sigma 20 mm f1.4 art lens

[Patrick Shanahan]

* Dr. Johannes Zellner  [07-30-17 13:31]:
> I just found that there's now lens correction for the sigma 20 mm f1.4
> art lens.  (This is dt 2.2.5 as it comes with debian unstable).  Any
> ideas how to get lens correction for this lens in (I'm especially
> interested for correcting distortion).

did you try: lensfun-update-data
you may need to install it first, don't know debian, on openSUSE Tw.

-- 
(paka)Patrick Shanahan   Plainfield, Indiana, USA  @ptilopteri
http://en.opensuse.orgopenSUSE Community Memberfacebook/ptilopteri
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[darktable-user] lens correction for sigma 20 mm f1.4 art lens

[Dr. Johannes Zellner]

Hi,

I just found that there's now lens correction for the sigma 20 mm f1.4 art lens.
(This is dt 2.2.5 as it comes with debian unstable).
Any ideas how to get lens correction for this lens in (I'm especially 
interested for correcting distortion).

Best regards,

-- 
Johannes


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