Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-21 Thread Alan Shutko
Micha Feigin [EMAIL PROTECTED] writes:

 On Tue, Jul 20, 2004 at 08:53:23PM -0500, Alan Shutko wrote:
 There's one CCD cell per image pixel, with the exception of the D1x,
 which has a strange layout[1].

 There is no way that this can be true physically.

Of course there is, since that's the way the world works.  You don't
think so, because you're wrong.  You've managed to acquire a good
theoretical understanding of Bayer while completely missing the
crucial bit that you neither need nor want four adjacent photo sites
per output image pixel.  (A miracle of modern education.)  In real
cameras, each pixel gets color info that it's missing by interpolating
from its neighbors.

http://www.dpreview.com/learn/?/Glossary/Camera_System/Color_Filter_Array_01.htm

Before you try to argue this point again, find one camera that works
the way you suggest, or one website that explains that Bayer cameras
have 4 photo sites per output pixel.  Otherwise, don't confuse people
who haven't learned not to listen to you yet.


As an aside, the reason you don't want to have four adjacent Bayer'd
CCD cells per output pixel is that the decreased CCD size would
result in more noise, canceling out the benefit you would get from
slightly better color resolution.

The Foveon chips do have four photo sites per pixel, allowing true
color detection, but they're stacked, not adjacent.

 As a side note, what could be interesting is if you could disable or
 remove the color mask to get 4 times the resolution on B/W pictures.

Kodak used to offer one of their DSLRs with and without the color
filter.  The DCS760 was color, the DCS760M was B/W, lacking the
filter.  But both output the same 3032 x 2008 file (gee, looks awfully
close to the resolution of the CCD, doesn't it?) and the somewhat
increased luminance resolution in the b/w wasn't interesting enough
for photographers to buy enough.  Kodak doesn't offer them anymore.
(I'm pretty sure there are monochrome digital backs, but those are an
entirely different price range.)

http://www.kodak.com/global/en/professional/products/cameras/dcs760/specs.jhtml?id=0.1.18.18.3.26.3.20.14lc=en
http://www.kodak.com/global/en/professional/products/cameras/dcs760M/specs.jhtml?id=0.1.18.18.3.26.3.20.20.3.4lc=en
http://www.dpreview.com/reviews/specs/Kodak/kodak_dcs760.asp

-- 
Alan Shutko [EMAIL PROTECTED] - I am the rocks.
Cats land on their feet, but at 10 stories, it doesn't matter.


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread listcomm

 I am using Nikon 4300 with linux and I am able to access it as mass 
 storage without any problem. I just have to mount the camera as usb mass 
 storage and copy the image files to my hdd. If any body is interested in 
 having more info, kindly let me know.

Yeah, Me!

I have a 5700 and will eventually be using it with Linux.  But I sort
of figured I would end up running the Nikon package under Windows via
VMware under Linux.  Getting Windows out of the picture completely is
a good idea.  What you're doing wouldn't get me any of the features of
the Nikon software, though (not that I'm *using* any of them yet, mind
you, but...) - for that, I'd need the Nikon software to run directly
under Linux?.

I'm sure my 5700 will hook up the same way as the 4300...  maybe you
could post the mount command you're using.  Did you have to load
anything
special as far as USB drivers goes, in order to support the camera?
Any information I get, I will capture in a file for Future Use...

  Doesn't this model and many others by Nikon suffer from low light 
  focusing problems? They lack a low-light focusing lamp, Canan doesn't.
 
 That is a problem which is very annoying in low light.

I haven't noticed that, but I have noticed the autofocus going nuts when
I get up close to a tree with light shining through the leaves; it
can't decide what to focus on.  I've been forced to turn on the manual
focus under such circumsatances.  Also, it goes wacky when it tries to
resolve something against a plain white background, and I've been forced
to troll all the way to the bottom of the white correction menus to try
to rearrange its attitude.  But I'm always getting into performance
corners with everything and then demanding too much, and Nikon
support will probably fix my problem anyway when I get around to
bugging them about it...

What are you taking pictures of in really low light, anyway??


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Magnus Therning
On Mon, Jul 19, 2004 at 11:16:33PM -0700, [EMAIL PROTECTED] wrote:

 I am using Nikon 4300 with linux and I am able to access it as mass 
 storage without any problem. I just have to mount the camera as usb mass 
 storage and copy the image files to my hdd. If any body is interested in 
 having more info, kindly let me know.

Yeah, Me!

I have a 5700 and will eventually be using it with Linux.  But I sort
of figured I would end up running the Nikon package under Windows via
VMware under Linux.  Getting Windows out of the picture completely is a
good idea.  What you're doing wouldn't get me any of the features of
the Nikon software, though (not that I'm *using* any of them yet, mind
you, but...) - for that, I'd need the Nikon software to run directly
under Linux?.

Just out of curiosity, what does that SW offer?

I'm sure my 5700 will hook up the same way as the 4300...  maybe you
could post the mount command you're using.  Did you have to load
anything special as far as USB drivers goes, in order to support the
camera?  Any information I get, I will capture in a file for Future
Use...

I don't own a Nikon camera, but I access mine as a USB mass storage
device as well.

I added the following two lines to /etc/modules:

 usb-storage
 uhci-hcd

I also configured udev to automatically create a device whenever I plug
in the camera (/etc/udev/rules.d/local.rules):

 BUS=usb, SYSFS{idProduct}=4015, SYSFS{idVendor}=0686, KERNEL=sd?1, NAME=%k, 
SYMLINK=camera usb/cam

I used [1] to find out how to add rules to udev.

/M

1. http://www.reactivated.net/udevrules.php

-- 
Magnus Therning(OpenPGP: 0xAB4DFBA4)
[EMAIL PROTECTED]
http://magnus.therning.org/

The cracked ones let in the light.
 -- Tom Peters


signature.asc
Description: Digital signature


Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread listcomm

 Just out of curiosity, what does that SW offer?

Well, there are several packages, one of which is always bundled
with the camera and the others for sale separately.  The Nikon website
is a
better source of info than I am, actually.  But the direct camera
support package provides USB detection, automatic downloading, a bunch
of cosmetic viewer features...  The buy-up packages provide image
correction and editing, I think.  (I haven't loaded it yet...).  Some of
those things are built into Windoze XP, I think (I'm not, and never
will be, upgraded beyond Win 98), so the Nikon software for older
versions of Windoze provides whatever the older versions don't have...

The real benefit to having the Windoze apps (Nikon or not) to support
the camera is in being able to load camera (or film scanner) images
directly into something like Photoshop without having to go through
any JPEG or other compression, so that you can manipulate raw
images.  (Again, I'm picking nits because I usually don't *do* this
- but that's where hooking the camera up to Linux might start producing
limitations if you don't have whatever Nikon or other software provides
the capability...)  I think the Nikon load you get with the camera
(or scanner) provides the hooks (drivers or driver linkage?)
for some of the other commercial apps like Photoshop to get at the
camera or scanner directly...  not sure though.


 I added the following two lines to /etc/modules:
.
.
.

Thanks  You probably just saved me an eventual two or three
evenings of website/document/list trolling...


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread listcomm
 In that case I would also suggest you avoid anything Sony. I've never
 seen worse customer support (and that even for very high end equipment
 company customers, not just the small end user), and when they do
 bother making a proper piece of hardware they seriously cripple it with
 their copyright paranoia (see NetMD for example).

Yipes...  I've bought some of their consumer electronics and had good
luck with it (including service), but never anything support-intensive
(i.e. programmable in any way).  I can easily believe they could have
gone bad when they got into anything with intelligence in it...

I just don't buy anything that has copy protection or blocked channels
or anything of the sort, without making sure whatever is
blocked/banned/etc.
can be defeated somehow.  It's a matter of principle; as soon as a
government
or industry decides to ban something, I run out and buy lots of whatever
it is immediately whether I want it or not.

 I am looking at linux support for coolpix 4500, and it seems to exist
 (haven't had a chance to test yet, its not mine). Nikon seems to
 support both mass storage and ptp on their cameras.

They do on some of their cameras, at least, according to the website
you mention below (interesting site, btw...).

 For some more information have a look
 http://www.teaser.fr/~hfiguiere/linux/digicam.html
 
 Canon may be a bit more troublesome, then nikon. You should look for a
 camera with both usb-storage support (easiest way to download pictures)
 and ptp support which will give you access to some more advanced camera
 features. I am not sure if it will allow you to access all the features
 of the camera from linux (some of the high end cameras are customizable
 and may require dedicated software).

*That* is the thing I'm concerned about, when thinking about going to
direct
Linux support, vs. using Linux with VMware to get at the Gatesware to
get at
the Nikonware.  But I haven't dug into the camera features enough to
know
what features are available that might be impacted, yet...


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Alan Shutko
[EMAIL PROTECTED] writes:

 The real benefit to having the Windoze apps (Nikon or not) to support
 the camera is in being able to load camera (or film scanner) images
 directly into something like Photoshop without having to go through
 any JPEG or other compression, so that you can manipulate raw
 images.

Note, this only matters if you have set the camera to save things as
RAW format.  If the camera is saving JPEGs, the software can't
convert them back into RAW... info has already been lost.

Why does RAW matter?  It is uncompressed and has more bits than a
JPEG (12 bits on my D1x) so you have more range when doing exposure
adjustments and whatnot.

There's a program called dcraw which will convert many forms of
camera raw files into standard formats for editing.  But it's not
quite as good as the Nikon Capture software, because Capture makes it
very easy to do common things like fix exposure and has cool toys
like DEE which is basically a magic exposure fixer.  Nothing you
can't do without capture, but you have to work harder to get there.

-- 
Alan Shutko [EMAIL PROTECTED] - I am the rocks.


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Micha Feigin
On Tue, Jul 20, 2004 at 12:33:31AM -0700, [EMAIL PROTECTED] wrote:
 
  Just out of curiosity, what does that SW offer?
 
 Well, there are several packages, one of which is always bundled
 with the camera and the others for sale separately.  The Nikon website
 is a
 better source of info than I am, actually.  But the direct camera
 support package provides USB detection, automatic downloading, a bunch
 of cosmetic viewer features...  The buy-up packages provide image
 correction and editing, I think.  (I haven't loaded it yet...).  Some of
 those things are built into Windoze XP, I think (I'm not, and never
 will be, upgraded beyond Win 98), so the Nikon software for older
 versions of Windoze provides whatever the older versions don't have...
 
 The real benefit to having the Windoze apps (Nikon or not) to support
 the camera is in being able to load camera (or film scanner) images
 directly into something like Photoshop without having to go through
 any JPEG or other compression, so that you can manipulate raw
 images.  (Again, I'm picking nits because I usually don't *do* this
 - but that's where hooking the camera up to Linux might start producing
 limitations if you don't have whatever Nikon or other software provides
 the capability...)  I think the Nikon load you get with the camera
 (or scanner) provides the hooks (drivers or driver linkage?)
 for some of the other commercial apps like Photoshop to get at the
 camera or scanner directly...  not sure though.
 

I played around with the coolpix 4500 we have in our lab in uni. It
works both as a usb-storage device and ptp which gives some more
capabilities (you need to chose the active method in the camera's
menus).

As a usb storage device the camera works like a disk-on-key
device. hotplug loads the modules for me (usb-storage and scsi support)
and autofs mounts the device. I don't remember what formating the camera
uses but you can mount it using one of

mount -t vfat /dev/sda /mnt
mount -t vfat /dev/sda1 /mnt

That is assuming that it will be the first scsi disk (if you don't have
another disk on key connected or similar).

It is then accessible as a regular disk..

For ptp you need gphoto (www.gphoto.org) and possible some gui above it.

If you work with jpeg then you have no problem from that point, just
open it in gimp. Nikon's raw format is called nef. Have a look at:
http://www.cybercom.net/~dcoffin/dcraw/
There is a program to decode nef and a plugin for gimp to open the
files directly without conversion.

Note that all this should also be true for canon (the raw decoding
program included).

  I added the following two lines to /etc/modules:
 .
 .
 .
 
 Thanks  You probably just saved me an eventual two or three
 evenings of website/document/list trolling...
 
 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Micha Feigin
On Tue, Jul 20, 2004 at 01:34:10AM -0700, [EMAIL PROTECTED] wrote:
  In that case I would also suggest you avoid anything Sony. I've never
  seen worse customer support (and that even for very high end equipment
  company customers, not just the small end user), and when they do
  bother making a proper piece of hardware they seriously cripple it with
  their copyright paranoia (see NetMD for example).
 
 Yipes...  I've bought some of their consumer electronics and had good
 luck with it (including service), but never anything support-intensive
 (i.e. programmable in any way).  I can easily believe they could have
 gone bad when they got into anything with intelligence in it...
 
 I just don't buy anything that has copy protection or blocked channels
 or anything of the sort, without making sure whatever is
 blocked/banned/etc.
 can be defeated somehow.  It's a matter of principle; as soon as a
 government
 or industry decides to ban something, I run out and buy lots of whatever
 it is immediately whether I want it or not.
 
  I am looking at linux support for coolpix 4500, and it seems to exist
  (haven't had a chance to test yet, its not mine). Nikon seems to
  support both mass storage and ptp on their cameras.
 
 They do on some of their cameras, at least, according to the website
 you mention below (interesting site, btw...).
 

Played with it a bit yesterday. It apparently supports both (method
needs to be chosen in the menu).

  For some more information have a look
  http://www.teaser.fr/~hfiguiere/linux/digicam.html
  

Found also this one lately which gives access to all kinds of raw
formats including a gimp plugin:

http://www.cybercom.net/~dcoffin/dcraw/

  Canon may be a bit more troublesome, then nikon. You should look for a
  camera with both usb-storage support (easiest way to download pictures)
  and ptp support which will give you access to some more advanced camera
  features. I am not sure if it will allow you to access all the features
  of the camera from linux (some of the high end cameras are customizable
  and may require dedicated software).
 
 *That* is the thing I'm concerned about, when thinking about going to
 direct
 Linux support, vs. using Linux with VMware to get at the Gatesware to
 get at
 the Nikonware.  But I haven't dug into the camera features enough to
 know
 what features are available that might be impacted, yet...
 

Depending on what they have done, it looks like gphoto and ptp may be
your friend.

 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Micha Feigin
On Tue, Jul 20, 2004 at 09:48:57AM -0500, Alan Shutko wrote:
 [EMAIL PROTECTED] writes:
 
  The real benefit to having the Windoze apps (Nikon or not) to support
  the camera is in being able to load camera (or film scanner) images
  directly into something like Photoshop without having to go through
  any JPEG or other compression, so that you can manipulate raw
  images.
 
 Note, this only matters if you have set the camera to save things as
 RAW format.  If the camera is saving JPEGs, the software can't
 convert them back into RAW... info has already been lost.
 
 Why does RAW matter?  It is uncompressed and has more bits than a
 JPEG (12 bits on my D1x) so you have more range when doing exposure
 adjustments and whatnot.
 

Some cameras actually compress the raw data BTW. I think Nikon does
that since nef (raw) output takes less space then tiff output.

The advantage of raw is that you get _all_ the data and not processed
data, so you get all the information. You can also reprocess it if a
better algorithm comes out later.

 There's a program called dcraw which will convert many forms of
 camera raw files into standard formats for editing.  But it's not
 quite as good as the Nikon Capture software, because Capture makes it
 very easy to do common things like fix exposure and has cool toys
 like DEE which is basically a magic exposure fixer.  Nothing you
 can't do without capture, but you have to work harder to get there.
 

There is also a plugin that allows using draw to open the raw files
directly in the gimp. That should rival the Nikon capture software.

 -- 
 Alan Shutko [EMAIL PROTECTED] - I am the rocks.
 
 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Alan Shutko
Micha Feigin [EMAIL PROTECTED] writes:

 Some cameras actually compress the raw data BTW. I think Nikon does
 that since nef (raw) output takes less space then tiff output.

On some Nikon cameras they are compressed using a visually lossless
algorithm.  Some recent posts on the D1scussion group indicate that it
reduces the effective bit depth from 12 bits to 9.  Ick.  My camera
has a toggle to select compressed or uncompressed, but I don't
believe the lower-end ones do.  

But even the uncompressed ones can be smaller than TIFFs, since they
only log 12 bits per pixel, where the TIFFs are 8 bits per color per
pixel.  So uncompressed should be about half the size.  (This is
because each pixel is only R, G, or B straight from the CCD.)

 There is also a plugin that allows using draw to open the raw files
 directly in the gimp. That should rival the Nikon capture software.

In terms of quality (assuming a 16bit/color gimp), yes.  In terms of
ease, no, since Nikon Capture has a lot of prepackaged actions which
do exactly what a photographer wants to do, and the gimp doesn't.  Of
course, they could be added... 8^)

-- 
Alan Shutko [EMAIL PROTECTED] - I am the rocks.
Idiolocation: You are here- on any map.


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Micha Feigin
On Tue, Jul 20, 2004 at 05:17:54PM -0500, Alan Shutko wrote:
 Micha Feigin [EMAIL PROTECTED] writes:
 
  Some cameras actually compress the raw data BTW. I think Nikon does
  that since nef (raw) output takes less space then tiff output.
 
 On some Nikon cameras they are compressed using a visually lossless
 algorithm.  Some recent posts on the D1scussion group indicate that it
 reduces the effective bit depth from 12 bits to 9.  Ick.  My camera
 has a toggle to select compressed or uncompressed, but I don't
 believe the lower-end ones do.  
 
 But even the uncompressed ones can be smaller than TIFFs, since they
 only log 12 bits per pixel, where the TIFFs are 8 bits per color per
 pixel.  So uncompressed should be about half the size.  (This is
 because each pixel is only R, G, or B straight from the CCD.)
 

Looks like you missed it a bit here. What you would call a pixel in the
raw file is not the same as a pixel in the tiff file.

In the tiff file you have three colors per pixel (R,G,B) and 8 bits per
color, that would make it 24 bits per pixel.

In the raw file you have 4 ccd cells per image pixel (R, G, G, B)
corresponding to the Bayer mask, at 12 bits per cell, which should make
that 48 bits per pixel, which in turn should make the file
approximately twice the size of the standard tiff (I think NEF files
are actually tiff files with some undocumented extensions IIRC).

The compression option probably lets you chose between lossy and
lossless compression and not uncompressed versus compressed, but its just
a wild guess.

I will have to read the code or the specs for dcraw.c (hope I got the
name right) to give you an exact answer to this.

  There is also a plugin that allows using draw to open the raw files
  directly in the gimp. That should rival the Nikon capture software.
 
 In terms of quality (assuming a 16bit/color gimp), yes.  In terms of
 ease, no, since Nikon Capture has a lot of prepackaged actions which
 do exactly what a photographer wants to do, and the gimp doesn't.  Of
 course, they could be added... 8^)

IIRC most relevant filters are already there or available, and I don't
like the magic filters of 'simple user' software anyway since it
usually doesn't do what I need (don't know Nikon Capture so I may be
way off the mark here).

 
 -- 
 Alan Shutko [EMAIL PROTECTED] - I am the rocks.
 Idiolocation: You are here- on any map.
 
 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Alan Shutko
Micha Feigin [EMAIL PROTECTED] writes:

 Looks like you missed it a bit here. What you would call a pixel in the
 raw file is not the same as a pixel in the tiff file.

Actually, it's close enough.

 In the raw file you have 4 ccd cells per image pixel (R, G, G, B)

That's not correct for any Bayer camera I know of.  Specifically not
correct for the Nikon DSLRs or consumer cameras.

There's one CCD cell per image pixel, with the exception of the D1x,
which has a strange layout[1].

 corresponding to the Bayer mask, at 12 bits per cell, which should make
 that 48 bits per pixel, which in turn should make the file
 approximately twice the size of the standard tiff (I think NEF files
 are actually tiff files with some undocumented extensions IIRC).

Correct, NEF files use a TIFF container.

As for sizes, TIFFs from the camera really are about twice the size
of uncompressed RAW.[2]  If you really want, I can provide pics taken
in each mode.

 The compression option probably lets you chose between lossy and
 lossless compression and not uncompressed versus compressed, but its just
 a wild guess.

The D1x allows a choice between uncompressed and compressed[2].  The
D70 does not.[3]  Neither allow you to choose lossiness.  The above
link explains the loss of detail.

(You're guessing.  I've got the camera.)

 I will have to read the code or the specs for dcraw.c (hope I got the
 name right) to give you an exact answer to this.

See [3], where they did.  There's also more info in the D1scussion
archive[4] which is unfortunately available only to members.

 IIRC most relevant filters are already there or available, and I don't
 like the magic filters of 'simple user' software anyway since it
 usually doesn't do what I need (don't know Nikon Capture so I may be
 way off the mark here).

Yep, you're way off.

For example, NC offers:

* Autoremoval of sensor dust from images, given a reference.  

* Fisheye-to-rectilinear with some lenses.

* Vignette control, to increase or decrease vignetting.  It knows the
  properties of the lens you used.  Very cool.

* Lets you adjust exposure by standard EV values

* Easy highlight/shadow adjustments.  Really, really easy.[5]

Now, you _can_ do all of this with the gimp.  But it's a more manual
work.  NC lets you work on thumbnails, set image settings, then batch
convert.  And you're limited in your plugin choice because you have to
use filmgimp to get 16-bit color, to take full advantage of the extra
range in the files.  Or, use the RawPhoto plugin and fiddle with
settings before actually converting it into 8-bit per channel, but
then you're severely limited in your available modifications.[6]

Footnotes: 
[1]  http://www.dpreview.com/reviews/nikond1x/

[2]  http://www.dpreview.com/reviews/nikond1x/page15.asp

[3]  http://www.majid.info/mylos/weblog/2004/05/02-1.html

[4]  http://www.juergenspecht.com/d1scussion/#13

[5]  http://www.lonestardigital.com/digital_dee.htm

[6]  http://ptj.rozeta.com.pl/Soft/RawPhoto

-- 
Alan Shutko [EMAIL PROTECTED] - I am the rocks.


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-20 Thread Micha Feigin
On Tue, Jul 20, 2004 at 08:53:23PM -0500, Alan Shutko wrote:
 Micha Feigin [EMAIL PROTECTED] writes:
 
  Looks like you missed it a bit here. What you would call a pixel in the
  raw file is not the same as a pixel in the tiff file.
 
 Actually, it's close enough.
 
  In the raw file you have 4 ccd cells per image pixel (R, G, G, B)
 
 That's not correct for any Bayer camera I know of.  Specifically not
 correct for the Nikon DSLRs or consumer cameras.
 
 There's one CCD cell per image pixel, with the exception of the D1x,
 which has a strange layout[1].
 

There is no way that this can be true physically.

CCD (and CMOS) cells are sensitive to intensity only, they have no color
sensitivity.

They have a color (usually Beyer) mask put over them so that each cell
receives only red, green or blue light. Each four cells are divided into
one red, one blue and two green (this is since the human eye has better
separation for green and square grids are easier to design).

The only thing strange about the D1x is the double resolution on the
horizontal axis which is then interpolated into higher resolution on
the vertical axis. Other then that the color filter is standard.

This is different from how modern film works where the colors are
layered.

As a side note, what could be interesting is if you could disable or
remove the color mask to get 4 times the resolution on B/W pictures.

  corresponding to the Bayer mask, at 12 bits per cell, which should make
  that 48 bits per pixel, which in turn should make the file
  approximately twice the size of the standard tiff (I think NEF files
  are actually tiff files with some undocumented extensions IIRC).
 
 Correct, NEF files use a TIFF container.
 
 As for sizes, TIFFs from the camera really are about twice the size
 of uncompressed RAW.[2]  If you really want, I can provide pics taken
 in each mode.
 

That could be interesting, but wouldn't tell me anything. I need to
look at the code that converts them to see what it does.

  The compression option probably lets you chose between lossy and
  lossless compression and not uncompressed versus compressed, but its just
  a wild guess.
 
 The D1x allows a choice between uncompressed and compressed[2].  The
 D70 does not.[3]  Neither allow you to choose lossiness.  The above
 link explains the loss of detail.
 
 (You're guessing.  I've got the camera.)
 

I just don't see what would explain the sizes, unless the camera is
dropping information or storing extra information in the tiff, or just
packs it badly in the tiff.

I don't have the time to look into it at the moment through.

  I will have to read the code or the specs for dcraw.c (hope I got the
  name right) to give you an exact answer to this.
 
 See [3], where they did.  There's also more info in the D1scussion
 archive[4] which is unfortunately available only to members.
 
  IIRC most relevant filters are already there or available, and I don't
  like the magic filters of 'simple user' software anyway since it
  usually doesn't do what I need (don't know Nikon Capture so I may be
  way off the mark here).
 
 Yep, you're way off.
 
 For example, NC offers:
 
 * Autoremoval of sensor dust from images, given a reference.  
 
 * Fisheye-to-rectilinear with some lenses.
 
 * Vignette control, to increase or decrease vignetting.  It knows the
   properties of the lens you used.  Very cool.
 
 * Lets you adjust exposure by standard EV values
 
 * Easy highlight/shadow adjustments.  Really, really easy.[5]
 

Sounds interesting.

 Now, you _can_ do all of this with the gimp.  But it's a more manual
 work.  NC lets you work on thumbnails, set image settings, then batch
 convert.  And you're limited in your plugin choice because you have to
 use filmgimp to get 16-bit color, to take full advantage of the extra
 range in the files.  Or, use the RawPhoto plugin and fiddle with
 settings before actually converting it into 8-bit per channel, but
 then you're severely limited in your available modifications.[6]
 
 Footnotes: 
 [1]  http://www.dpreview.com/reviews/nikond1x/
 
 [2]  http://www.dpreview.com/reviews/nikond1x/page15.asp
 
 [3]  http://www.majid.info/mylos/weblog/2004/05/02-1.html
 
 [4]  http://www.juergenspecht.com/d1scussion/#13
 
 [5]  http://www.lonestardigital.com/digital_dee.htm
 
 [6]  http://ptj.rozeta.com.pl/Soft/RawPhoto
 
 -- 
 Alan Shutko [EMAIL PROTECTED] - I am the rocks.
 
 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-19 Thread J.S.Sahambi
(P.S.: If anyone knows anything about Linux support for Nikon, please
point me at it; I'll probably need it eventually...)
I am using Nikon 4300 with linux and I am able to access it as mass 
storage without any problem. I just have to mount the camera as usb mass 
storage and copy the image files to my hdd. If any body is interested in 
having more info, kindly let me know.

Doesn't this model and many others by Nikon suffer from low light 
focusing problems? They lack a low-light focusing lamp, Canan doesn't.
That is a problem which is very annoying in low light.
JSS
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-18 Thread listcomm
I suppose this has wandered far enough OT from Linux that I can weigh
in on it...

After using Nikon's website/email support, I will not buy
anything else.

I bought a dead (as it turned out) Nikon film scanner at a swap
meet a couple of years back, plugged it into Windoze, and started
in on it.  I found every piece of documentation that was supposed
to come with the unit on-line.  Nikon's support team helped me
troubleshoot it, and when their front-line support group couldn't
figure it out they quickly transferred me to their specialists who
diagnosed a blown SCSI terminator fuse and assisted me in
disassembling and repairing the unit.  They answered my emails
within 2 hours *even on weekends*.  They were so efficient that
I *never had to make a phone call*.  I ended up paying $75.00
for a working $1200 film scanner.

After getting that kind of support from Nikon on one of their
products that wasn't on warranty and wasn't even bought from
one of their dealers, I didn't even bother looking at other
cameras when I went to buy a digital camera, because I *know*
I'm going to get into software and interface trouble with it just
like I do with everything else, and at least with Nikon I know I
won't end up having to deal with a third-world something with a
third-grade education who only speaks Fungoolistani and can't wait to
get
rid of me as soon as my question isn't in its hotline cookbook.
When it comes to computerized electronics, I'll even give up some
performance or features to get support.  (What good are the
performance and features if you can't get the @#$%^*! thing working??)

(P.S.: If anyone knows anything about Linux support for Nikon, please
point me at it; I'll probably need it eventually...)

(N.B.:  I will, for identically converse reasons relating to support,
NEVER buy ANYTHING from Fuji EVER again - not even so much as a roll
of film.  And I hope somebody from both Nikon and Fuji is reading this.)


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-18 Thread Micha Feigin
On Sun, Jul 18, 2004 at 11:03:49AM -0700, [EMAIL PROTECTED] wrote:
 I suppose this has wandered far enough OT from Linux that I can weigh
 in on it...
 
 After using Nikon's website/email support, I will not buy
 anything else.
 
 I bought a dead (as it turned out) Nikon film scanner at a swap
 meet a couple of years back, plugged it into Windoze, and started
 in on it.  I found every piece of documentation that was supposed
 to come with the unit on-line.  Nikon's support team helped me
 troubleshoot it, and when their front-line support group couldn't
 figure it out they quickly transferred me to their specialists who
 diagnosed a blown SCSI terminator fuse and assisted me in
 disassembling and repairing the unit.  They answered my emails
 within 2 hours *even on weekends*.  They were so efficient that
 I *never had to make a phone call*.  I ended up paying $75.00
 for a working $1200 film scanner.
 
 After getting that kind of support from Nikon on one of their
 products that wasn't on warranty and wasn't even bought from
 one of their dealers, I didn't even bother looking at other
 cameras when I went to buy a digital camera, because I *know*
 I'm going to get into software and interface trouble with it just
 like I do with everything else, and at least with Nikon I know I
 won't end up having to deal with a third-world something with a
 third-grade education who only speaks Fungoolistani and can't wait to
 get
 rid of me as soon as my question isn't in its hotline cookbook.
 When it comes to computerized electronics, I'll even give up some
 performance or features to get support.  (What good are the
 performance and features if you can't get the @#$%^*! thing working??)
 
 (P.S.: If anyone knows anything about Linux support for Nikon, please
 point me at it; I'll probably need it eventually...)
 
 (N.B.:  I will, for identically converse reasons relating to support,
 NEVER buy ANYTHING from Fuji EVER again - not even so much as a roll
 of film.  And I hope somebody from both Nikon and Fuji is reading this.)
 

In that case I would also suggest you avoid anything Sony. I've never
seen worse customer support (and that even for very high end equipment
company customers, not just the small end user), and when they do
bother making a proper piece of hardware they seriously cripple it with
their copyright paranoia (see NetMD for example).

As for nikon, I am using a film camera but very happy with it. High
quality hardware and glass. For digital, cannon seem to be a bit ahead
now in terms of hardware (cmos vs. ccd).

I am looking at linux support for coolpix 4500, and it seems to exist
(haven't had a chance to test yet, its not mine). Nikon seems to
support both mass storage and ptp on their cameras.

For some more information have a look
http://www.teaser.fr/~hfiguiere/linux/digicam.html

Canon may be a bit more troublesome, then nikon. You should look for a
camera with both usb-storage support (easiest way to download pictures)
and ptp support which will give you access to some more advanced camera
features. I am not sure if it will allow you to access all the features
of the camera from linux (some of the high end cameras are customizable
and may require dedicated software).

Also look at the gphoto site to see what they support to be sure
www.gphoto.org

 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
 
  
  +++
  This Mail Was Scanned By Mail-seCure System
  at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-18 Thread H. S.
Apparently, _Micha Feigin_, on 07/18/04 15:26,typed:
On Sun, Jul 18, 2004 at 11:03:49AM -0700, [EMAIL PROTECTED] wrote:

(P.S.: If anyone knows anything about Linux support for Nikon, please
point me at it; I'll probably need it eventually...)
I am interested in that too. I can access Canon G5 with gphoto2 but I 
mainly use a card reader to copy pictures. I am looking more towards the 
programs with which I can talk with the camera and customize it. Canonn 
give accompanying S/W for that but only for Windows :(


(N.B.:  I will, for identically converse reasons relating to support,
NEVER buy ANYTHING from Fuji EVER again - not even so much as a roll
of film.  And I hope somebody from both Nikon and Fuji is reading this.)
Their films are not that bad, e.g. Superia 200.

I am looking at linux support for coolpix 4500, and it seems to exist
Doesn't this model and many others by Nikon suffer from low light 
focusing problems? They lack a low-light focusing lamp, Canan doesn't.


features. I am not sure if it will allow you to access all the features
of the camera from linux (some of the high end cameras are customizable
and may require dedicated software).
Ah, if it were possible with Canon G5 in Linux, it would s great.
-HS
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]



Re: recommendation for digital camera -= Shameless Nikon plug

2004-07-18 Thread Micha Feigin
On Sun, Jul 18, 2004 at 04:07:50PM -0400, H. S. wrote:
 Apparently, _Micha Feigin_, on 07/18/04 15:26,typed:
 On Sun, Jul 18, 2004 at 11:03:49AM -0700, [EMAIL PROTECTED] wrote:
 
 (P.S.: If anyone knows anything about Linux support for Nikon, please
 point me at it; I'll probably need it eventually...)
 
 I am interested in that too. I can access Canon G5 with gphoto2 but I 
 mainly use a card reader to copy pictures. I am looking more towards the 
 programs with which I can talk with the camera and customize it. Canonn 
 give accompanying S/W for that but only for Windows :(
 

You could try 
http://jalkapallo.org/superkolik/canon.html
and maybe also have a look at
http://ptp.sourceforge.net/

 
 (N.B.:  I will, for identically converse reasons relating to support,
 NEVER buy ANYTHING from Fuji EVER again - not even so much as a roll
 of film.  And I hope somebody from both Nikon and Fuji is reading this.)
 
 Their films are not that bad, e.g. Superia 200.
 

I prefer the 100 iso, and Reala, although its way over priced where I
leave. I usually prefer slides though and for I like the colors for
Kodak better.

 
 
 I am looking at linux support for coolpix 4500, and it seems to exist
 
 Doesn't this model and many others by Nikon suffer from low light 
 focusing problems? They lack a low-light focusing lamp, Canan doesn't.
 

The image processing lab ran by my uni supervisor bought it some time
ago (before I started working with them) and they are no thinking of
moving to linux so that we can setup a cluster, so the only thing I
need to show is that it works under linux (and find a cluster that can
migrate matlab ;-)

 
 
 features. I am not sure if it will allow you to access all the features
 of the camera from linux (some of the high end cameras are customizable
 and may require dedicated software).
 
 Ah, if it were possible with Canon G5 in Linux, it would s great.
 

Seems like cannon don't really like linux, but take a look at the above
links.

 -HS
 
 
 -- 
 To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
 with a subject of unsubscribe. Trouble? Contact 
 [EMAIL PROTECTED]
 
 
 +++
 This Mail Was Scanned By Mail-seCure System
 at the Tel-Aviv University CC.
 


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED] 
with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]