Re: [darktable-user] Weird colors and difficult noise reduction compared to LightRoom or RawTherapee

2016-12-07 Thread Jack Bowling 

I got usable results on the old woman/young woman poster shot by using:

1) two invocations of the equalizer - one using the denoise preset but 
increased to a mix of 1.25, and the other using the sharpness preset 
with a mix of 1.0


2) very slight touch of raw denoise

3) enabled defringe module at defaults

4) increased sharpen module (unsharp mask) a touch.

I note the lens correction module does nothing for this image despite 
the obvious barrel distortion. I suppose lensfun does not support this 
lens? One thing I did not do is raise the exposure which would only 
increase the noise substantially.


Having said all that, everybody has their own threshold of detail versus 
smoothing when denoising.


Jack


On 12/07/2016 10:10 PM, KOVÁCS István wrote:

Hi,
(Second attempt, sorry if you get a duplicate.)

For very high ISO, i usually enable colour smoothing under demosaic
settings, apply profiled denoising for colours (wavelet mode with colour
blending mode, heavy denoising settings), avoid all sharpening, and, if
the situation is really bad, apply a pinch of raw denoising. Still, I
find that RawTherapee is better in this respect. Sometimes I skip
denoising in darktable and use NoiseNinja, an old commercial denoising
app that has a Linux version (BTW, PictureCode, developers of
NoiseNinja, now produce a nice little raw developer called PhotoNinja,
which you can get to run under wine).

Regarding colours, darktable often ships with two profiles for a camera,
called standard and enhanced. You can try both, and if you don't like
either, you can profile your camera, or try RawStudio's profiles (if
they have one). Expect a drop in processing speed with RawStudio
profiles, though.

Kofa

On 8 Dec 2016 00:45, "Saint Germain" > wrote:

Hello,

I just bought a Samsung NX1 and would like to use Darktable to process
the RAW (SRW).

However I really tried but I couldn't manage to get correct colors or
to have a good noise reduction in high iso situation (low light).

I've tried LightRoom and RawTherapee and I managed (without knowing
these softwares) to get quite good results in under 5-10 minutes.
So far I think I've spent several hours with Darktable...

I would really like to stay with Darktable (as I find the interface
quite pleasant and it offers a lot of useful features) but I really
need to have good colors and good noise reduction (at least comparable
to LR and RT) without too much tinkering.

>From what I have heard, it seems that Darktable noise reduction is
very powerful and actually superior to LR or RT. Basic noise reduction
in LR or RT is very simple : 2 sliders and that's it (Luminance and
Details). However it is quite effective, and I haven't been able to do
better with Darktable (and it took me much more time, I even made a
noise profile !).

Perhaps am I doing something wrong ?
Can someone guide me or show me how to proceed ?

Original JPEG + RAW
http://dl.free.fr/fBpM8C6I1
http://dl.free.fr/jB13bvffN

Rawtherapee (JPEG + pp3)
http://dl.free.fr/vT4rAtm5O
http://dl.free.fr/fJEcA3gH9

Lightroom (JPEG)
http://dl.free.fr/nEEcDqtq0

Darktable Noise profile
http://dl.free.fr/sZ8hCADDw

Darktable (JPEG + xmp)
http://dl.free.fr/fJQSonH7n
http://dl.free.fr/knQbw4QMl

Thanks a lot in advance,

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Re: [darktable-user] Weird colors and difficult noise reduction compared to LightRoom or RawTherapee

2016-12-07 Thread KOVÁCS István 
Hi,
(Second attempt, sorry if you get a duplicate.)

For very high ISO, i usually enable colour smoothing under demosaic
settings, apply profiled denoising for colours (wavelet mode with colour
blending mode, heavy denoising settings), avoid all sharpening, and, if the
situation is really bad, apply a pinch of raw denoising. Still, I find that
RawTherapee is better in this respect. Sometimes I skip denoising in
darktable and use NoiseNinja, an old commercial denoising app that has a
Linux version (BTW, PictureCode, developers of NoiseNinja, now produce a
nice little raw developer called PhotoNinja, which you can get to run under
wine).

Regarding colours, darktable often ships with two profiles for a camera,
called standard and enhanced. You can try both, and if you don't like
either, you can profile your camera, or try RawStudio's profiles (if they
have one). Expect a drop in processing speed with RawStudio profiles,
though.

Kofa

On 8 Dec 2016 00:45, "Saint Germain"  wrote:

> Hello,
>
> I just bought a Samsung NX1 and would like to use Darktable to process
> the RAW (SRW).
>
> However I really tried but I couldn't manage to get correct colors or
> to have a good noise reduction in high iso situation (low light).
>
> I've tried LightRoom and RawTherapee and I managed (without knowing
> these softwares) to get quite good results in under 5-10 minutes.
> So far I think I've spent several hours with Darktable...
>
> I would really like to stay with Darktable (as I find the interface
> quite pleasant and it offers a lot of useful features) but I really
> need to have good colors and good noise reduction (at least comparable
> to LR and RT) without too much tinkering.
>
> From what I have heard, it seems that Darktable noise reduction is
> very powerful and actually superior to LR or RT. Basic noise reduction
> in LR or RT is very simple : 2 sliders and that's it (Luminance and
> Details). However it is quite effective, and I haven't been able to do
> better with Darktable (and it took me much more time, I even made a
> noise profile !).
>
> Perhaps am I doing something wrong ?
> Can someone guide me or show me how to proceed ?
>
> Original JPEG + RAW
> http://dl.free.fr/fBpM8C6I1
> http://dl.free.fr/jB13bvffN
>
> Rawtherapee (JPEG + pp3)
> http://dl.free.fr/vT4rAtm5O
> http://dl.free.fr/fJEcA3gH9
>
> Lightroom (JPEG)
> http://dl.free.fr/nEEcDqtq0
>
> Darktable Noise profile
> http://dl.free.fr/sZ8hCADDw
>
> Darktable (JPEG + xmp)
> http://dl.free.fr/fJQSonH7n
> http://dl.free.fr/knQbw4QMl
>
> Thanks a lot in advance,
> 
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscribe@
> lists.darktable.org
>
>


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Re: [darktable-user] Weird colors and difficult noise reduction compared to LightRoom or RawTherapee

2016-12-07 Thread Gary Parkinson 

Try using the Darktable style "Denoise_chinese"

https://dtstyle.net/

--
Gary Parkinson
www.instawamphotography.com.au
0408 632 403



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Re: [darktable-user] Weird colors and difficult noise reduction compared to LightRoom or RawTherapee

2016-12-07 Thread darktable 
On Wed, 7 Dec 2016 21:05:26 -0500
Robert Krawitz  wrote:

>On Thu, 8 Dec 2016 00:44:48 +0100, Saint Germain wrote:
>> I just bought a Samsung NX1 and would like to use Darktable to
>> process the RAW (SRW).
>>
>> However I really tried but I couldn't manage to get correct colors
>> or to have a good noise reduction in high iso situation (low
>> light).
>>
>> I've tried LightRoom and RawTherapee and I managed (without knowing
>> these softwares) to get quite good results in under 5-10 minutes.
>> So far I think I've spent several hours with Darktable...  
>
>My experience with the Canon 7DmkII at high ISO (shooting basketball
>at ISO 1) was very similar, and I posted about this a couple of
>weeks ago (I'll forward you my email under separate cover).  I was
>unable to get results anywhere close to what I could easily achieve
>in RawTherapee with Luminance and Luminance Detail noise reduction
>and sharpening with Sharpen Only Edges (which does a good job
>avoiding sharpening noise).
>
>My comparison shots are posted at
>https://rlk.smugmug.com/Photography/DarktableRawTherapee/ with the
>original at
>https://rlk.smugmug.com/Sports/Basketball/MIT-SarLaw-mbb-20161126/i-chq2xjG/A
>

Since nobody else...

I use both Canon 7Dmk2 and Fujifilm X-T10 and for me it works quite
well. I do not use ISO10,000 but I use regularly 3,200 and
occasionally 6,400.

I've used with good success:

* denoise profiled (module) with either non-local means or wavelets

or 

* equalizer (module) with the denoise & sharpen preset.

You have to try them both and see which you prefer

I've had to cheat by changing the X-T10 to an X-T1. 

Can't talk to the Samsung NX1


If I'm out to lunch, please pipe in!

-- 
sknahT

vyS

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[darktable-user] Weird colors and difficult noise reduction compared to LightRoom or RawTherapee

2016-12-07 Thread Saint Germain 
Hello,

I just bought a Samsung NX1 and would like to use Darktable to process
the RAW (SRW).

However I really tried but I couldn't manage to get correct colors or
to have a good noise reduction in high iso situation (low light).

I've tried LightRoom and RawTherapee and I managed (without knowing
these softwares) to get quite good results in under 5-10 minutes.
So far I think I've spent several hours with Darktable...

I would really like to stay with Darktable (as I find the interface
quite pleasant and it offers a lot of useful features) but I really
need to have good colors and good noise reduction (at least comparable
to LR and RT) without too much tinkering.

From what I have heard, it seems that Darktable noise reduction is
very powerful and actually superior to LR or RT. Basic noise reduction
in LR or RT is very simple : 2 sliders and that's it (Luminance and
Details). However it is quite effective, and I haven't been able to do
better with Darktable (and it took me much more time, I even made a
noise profile !).

Perhaps am I doing something wrong ?
Can someone guide me or show me how to proceed ?

Original JPEG + RAW
http://dl.free.fr/fBpM8C6I1
http://dl.free.fr/jB13bvffN

Rawtherapee (JPEG + pp3)
http://dl.free.fr/vT4rAtm5O
http://dl.free.fr/fJEcA3gH9

Lightroom (JPEG)
http://dl.free.fr/nEEcDqtq0

Darktable Noise profile
http://dl.free.fr/sZ8hCADDw

Darktable (JPEG + xmp)
http://dl.free.fr/fJQSonH7n
http://dl.free.fr/knQbw4QMl

Thanks a lot in advance,

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[darktable-user] Exposure Compensation in Image Information panel

2016-12-07 Thread Michael Staats 
Hi,
first, thanks for darktable, I think it's great.
Quick question: Would it be possible to add "Exposure Compensation" to
the image information panel?

(Like from
$ exiftool MIST6853.JPG|grep -i expo.*ensa
Exposure Compensation   : -1.0
)

Best regards,
 Michael

-- 
Michael Staats
michael.sta...@gmx.de

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