Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Jeffery Small
Gary Aitken and Alexander Rabtchevich suggest that Darktable (and possibly
Shotwell) are applying corrections that improve the display of the raw
image.  This is true, but in Darktable you can select the 0 - original
image without the sharpening and curve correction and the image is still
very presentable, unlike anything that UFRaw is presenting.  I can open the
raw images using the software provided by Minolta and Sony and the images
look fine, but these tools run only on Windows and I really want the GIMP
plug-in feature that UFRaw provides.

After opening in UFRaw, the initial settings are so bad that I am unable to
correct the picture to create anything close to a usable image.

Are other Minolta/Sony users seeing similar results, and don't Cannon, Nikon
and other raw-file users see reasonable images when they use UFRaw?


Darktable applies RGB camera curve, uses enhanced camera color matrix 
and applies a little sharpening by default.

Jeffery Small wrote:
 Ubuntu 13.10 system running on an Asus U56E system
 UFRaw ver. 0.19.2
 Dcraw ver. 9.19.1
 GIMP ver. 2.8.6
 Darktable ver. 1.2.3
 Shotwell ver. 0.15.0

 I reported on this a long while ago and then got very busy with other
 things.  This is a follow-up with details.

 When attempting to load Minolta (mrw) and Sony (arw) raw image files into
 GIMP, UFRaw is not properly processing them.  The following webpage has
 images which demonstrate the problem:

 http://smallthoughts.com/photos/misc/GIMP/index.html

 The raw files are being imported with distorted color and contrast.
 However, as the additional images show, other programs such as Darktable
 and Shotwell are importing and displaying these files properly.

 Has anyone else been experiencing similar problems, and is there any known
 solution?

 Regards.

With respect,
Alexander Rabtchevich

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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Jeffery Small
Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:

When you look at an imported image in darktable without applying any 
corrections, the program shows you the embedded preview, which was made 
by the camera itself with all the corrections it (the camera) would made 
with the original RAW when converting it to jpg. If you applyin UFRaw a 
camera curve, similar to the one in darktable, you will see the similar 
result...

It's true that the lion image imported into UFRaw is terribly over exposed,
but that is something that UFRaw is doing to the raw data.  The original
image has proper exposure which was confirmed at the time the picture was
shot as well as the proper exposure from the companion JPEG image (I shoot
RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
of the spectrum and there is no way to use this tool to fix the picture as
most of the image detail is already lost.  When I open the same file in the
DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
raw image looks just fine and can be tweaked.

So I have to assume that this is a serious bug in UFRaw and I have reported
it as such.  I'm just confused that I have not heard other people complaining
about this problem.

Regards,
--
Jeff

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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Partha Bagchi
Can you provide an example image to confirm this?

Thanks,
Partha


On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:

 Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:

 When you look at an imported image in darktable without applying any
 corrections, the program shows you the embedded preview, which was made
 by the camera itself with all the corrections it (the camera) would made
 with the original RAW when converting it to jpg. If you applyin UFRaw a
 camera curve, similar to the one in darktable, you will see the similar
 result...

 It's true that the lion image imported into UFRaw is terribly over exposed,
 but that is something that UFRaw is doing to the raw data.  The original
 image has proper exposure which was confirmed at the time the picture was
 shot as well as the proper exposure from the companion JPEG image (I shoot
 RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
 of the spectrum and there is no way to use this tool to fix the picture as
 most of the image detail is already lost.  When I open the same file in the
 DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
 raw image looks just fine and can be tweaked.

 So I have to assume that this is a serious bug in UFRaw and I have reported
 it as such.  I'm just confused that I have not heard other people
 complaining
 about this problem.

 Regards,
 --
 Jeff

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 List address:gimp-user-list@gnome.org
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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Jeffery Small
Partha Bagchi parth...@gmail.com writes:

Can you provide an example image to confirm this?

Sure.  Let's use the clouds photo since it is a more modern Sony format and
pretty dramatically shows the loss of information.  Point your browser here:

http://smallthoughts.com/photos/misc/GIMP/clouds.arw

and save the image.  This is a 24-Mb image file taken with an Alpha a77
camera.

Thanks for looking at this.  Let me know if I can provide any additional
info.

Regards,
--
Jeff

On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:

 Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:

 When you look at an imported image in darktable without applying any
 corrections, the program shows you the embedded preview, which was made
 by the camera itself with all the corrections it (the camera) would made
 with the original RAW when converting it to jpg. If you applyin UFRaw a
 camera curve, similar to the one in darktable, you will see the similar
 result...

 It's true that the lion image imported into UFRaw is terribly over exposed,
 but that is something that UFRaw is doing to the raw data.  The original
 image has proper exposure which was confirmed at the time the picture was
 shot as well as the proper exposure from the companion JPEG image (I shoot
 RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
 of the spectrum and there is no way to use this tool to fix the picture as
 most of the image detail is already lost.  When I open the same file in the
 DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
 raw image looks just fine and can be tweaked.

 So I have to assume that this is a serious bug in UFRaw and I have reported
 it as such.  I'm just confused that I have not heard other people
 complaining
 about this problem.

 Regards,
 --
 Jeff

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 gimp-user-list mailing list
 List address:gimp-user-list@gnome.org
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--001a11c2ef8064e2f704f65119ee
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

div dir=3DltrCan you provide an example image to confirm this?divbr=
/divdivThanks,/divdivPartha/div/divdiv class=3Dgmail_extra=
brbrdiv class=3Dgmail_quoteOn Sat, Apr 5, 2014 at 3:11 PM, Jeffery S=
mall span dir=3Dltrlt;a href=3Dmailto:j...@cjsa.com; target=3D_blan=
kj...@cjsa.com/agt;/span wrote:br
blockquote class=3Dgmail_quote style=3Dmargin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1exAlexander Rabtchevich lt;a href=3Dmailto:=
alexander.v.rabtchev...@gmx.netalexander.v.rabtchev...@gmx.net/agt; wr=
ites:br

br
gt;When you look at an imported image in darktable without applying anybr=

gt;corrections, the program shows you the embedded preview, which was made=
br
gt;by the camera itself with all the corrections it (the camera) would mad=
ebr
gt;with the original RAW when converting it to jpg. If you applyin UFRaw a=
br
gt;camera curve, similar to the one in darktable, you will see the similar=
br
gt;result...br
br
It#39;s true that the lion image imported into UFRaw is terribly over expo=
sed,br
but that is something that UFRaw is doing to the raw data. =A0The original=
br
image has proper exposure which was confirmed at the time the picture wasb=
r
shot as well as the proper exposure from the companion JPEG image (I shoot=
br
RAW+JPG). =A0In UFRaw the histogram is shoved completely to the right edge=
br
of the spectrum and there is no way to use this tool to fix the picture as=
br
most of the image detail is already lost. =A0When I open the same file in t=
hebr
DiMAGE Image Viewer software from Minolta (on a Windows XP machine), thebr=

raw image looks just fine and can be tweaked.br
br
So I have to assume that this is a serious bug in UFRaw and I have reported=
br
it as such. =A0I#39;m just confused that I have not heard other people com=
plainingbr
about this problem.br
br
Regards,br
--br
Jeffbr
br
___br
gimp-user-list mailing listbr
List address: =A0 =A0a href=3Dmailto:gimp-user-list@gnome.org;gimp-user-=
l...@gnome.org/abr
List membership: a href=3Dhttps://mail.gnome.org/mailman/listinfo/gimp-us=
er-list target=3D_blankhttps://mail.gnome.org/mailman/listinfo/gimp-use=
r-list/abr
List archives: =A0 a href=3Dhttps://mail.gnome.org/archives/gimp-user-lis=
t target=3D_blankhttps://mail.gnome.org/archives/gimp-user-list/abr
/blockquote/divbr/div

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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Patrick Shanahan
* Jeffery Small j...@cjsa.com [04-05-14 16:15]:
 Partha Bagchi parth...@gmail.com writes:
 
 Can you provide an example image to confirm this?
 
 Sure.  Let's use the clouds photo since it is a more modern Sony format and
 pretty dramatically shows the loss of information.  Point your browser here:
 
 http://smallthoughts.com/photos/misc/GIMP/clouds.arw
 
 and save the image.  This is a 24-Mb image file taken with an Alpha a77
 camera.
 
 Thanks for looking at this.  Let me know if I can provide any additional
 info.
 
 Regards,
 --
 Jeff
 
 On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:
 
  Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:
 
  When you look at an imported image in darktable without applying any
  corrections, the program shows you the embedded preview, which was made
  by the camera itself with all the corrections it (the camera) would made
  with the original RAW when converting it to jpg. If you applyin UFRaw a
  camera curve, similar to the one in darktable, you will see the similar
  result...
 
  It's true that the lion image imported into UFRaw is terribly over exposed,
  but that is something that UFRaw is doing to the raw data.  The original
  image has proper exposure which was confirmed at the time the picture was
  shot as well as the proper exposure from the companion JPEG image (I shoot
  RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
  of the spectrum and there is no way to use this tool to fix the picture as
  most of the image detail is already lost.  When I open the same file in the
  DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
  raw image looks just fine and can be tweaked.
 
  So I have to assume that this is a serious bug in UFRaw and I have reported
  it as such.  I'm just confused that I have not heard other people
  complaining
  about this problem.
 
  Regards,
  --
  Jeff
 
  ___
  gimp-user-list mailing list
  List address:gimp-user-list@gnome.org
  List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
  List archives:   https://mail.gnome.org/archives/gimp-user-list
 
 
 --001a11c2ef8064e2f704f65119ee
 Content-Type: text/html; charset=ISO-8859-1
 Content-Transfer-Encoding: quoted-printable
 
 div dir=3DltrCan you provide an example image to confirm this?divbr=
 /divdivThanks,/divdivPartha/div/divdiv class=3Dgmail_extra=
 brbrdiv class=3Dgmail_quoteOn Sat, Apr 5, 2014 at 3:11 PM, Jeffery S=
 mall span dir=3Dltrlt;a href=3Dmailto:j...@cjsa.com; target=3D_blan=
 kj...@cjsa.com/agt;/span wrote:br
 blockquote class=3Dgmail_quote style=3Dmargin:0 0 0 .8ex;border-left:1p=
 x #ccc solid;padding-left:1exAlexander Rabtchevich lt;a href=3Dmailto:=
 alexander.v.rabtchev...@gmx.netalexander.v.rabtchev...@gmx.net/agt; wr=
 ites:br
 
 br
 gt;When you look at an imported image in darktable without applying anybr=
 
 gt;corrections, the program shows you the embedded preview, which was made=
 br
 gt;by the camera itself with all the corrections it (the camera) would mad=
 ebr
 gt;with the original RAW when converting it to jpg. If you applyin UFRaw a=
 br
 gt;camera curve, similar to the one in darktable, you will see the similar=
 br
 gt;result...br
 br
 It#39;s true that the lion image imported into UFRaw is terribly over expo=
 sed,br
 but that is something that UFRaw is doing to the raw data. =A0The original=
 br
 image has proper exposure which was confirmed at the time the picture wasb=
 r
 shot as well as the proper exposure from the companion JPEG image (I shoot=
 br
 RAW+JPG). =A0In UFRaw the histogram is shoved completely to the right edge=
 br
 of the spectrum and there is no way to use this tool to fix the picture as=
 br
 most of the image detail is already lost. =A0When I open the same file in t=
 hebr
 DiMAGE Image Viewer software from Minolta (on a Windows XP machine), thebr=
 
 raw image looks just fine and can be tweaked.br
 br
 So I have to assume that this is a serious bug in UFRaw and I have reported=
 br
 it as such. =A0I#39;m just confused that I have not heard other people com=
 plainingbr
 about this problem.br
 br
 Regards,br
 --br
 Jeffbr
 br
 ___br
 gimp-user-list mailing listbr
 List address: =A0 =A0a href=3Dmailto:gimp-user-list@gnome.org;gimp-user-=
 l...@gnome.org/abr
 List membership: a href=3Dhttps://mail.gnome.org/mailman/listinfo/gimp-us=
 er-list target=3D_blankhttps://mail.gnome.org/mailman/listinfo/gimp-use=
 r-list/abr
 List archives: =A0 a href=3Dhttps://mail.gnome.org/archives/gimp-user-lis=
 t target=3D_blankhttps://mail.gnome.org/archives/gimp-user-list/abr
 /blockquote/divbr/div
 
 --001a11c2ef8064e2f704f65119ee--
 
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 gimp-user-list mailing list
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 List archives:   

Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Partha Bagchi
Can you also put the jpg you shot since that tells me what you are
expecting to see?

As an aside you may want to visit Dave Coffin's page and read the FAQ
especially about gamma and linearity.

Thanks,
Partha



On Sat, Apr 5, 2014 at 4:11 PM, Jeffery Small j...@cjsa.com wrote:

 Partha Bagchi parth...@gmail.com writes:

 Can you provide an example image to confirm this?

 Sure.  Let's use the clouds photo since it is a more modern Sony format and
 pretty dramatically shows the loss of information.  Point your browser
 here:

 http://smallthoughts.com/photos/misc/GIMP/clouds.arw

 and save the image.  This is a 24-Mb image file taken with an Alpha a77
 camera.

 Thanks for looking at this.  Let me know if I can provide any additional
 info.

 Regards,
 --
 Jeff

 On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:

  Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:
 
  When you look at an imported image in darktable without applying any
  corrections, the program shows you the embedded preview, which was made
  by the camera itself with all the corrections it (the camera) would
 made
  with the original RAW when converting it to jpg. If you applyin UFRaw a
  camera curve, similar to the one in darktable, you will see the similar
  result...
 
  It's true that the lion image imported into UFRaw is terribly over
 exposed,
  but that is something that UFRaw is doing to the raw data.  The original
  image has proper exposure which was confirmed at the time the picture
 was
  shot as well as the proper exposure from the companion JPEG image (I
 shoot
  RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
  of the spectrum and there is no way to use this tool to fix the picture
 as
  most of the image detail is already lost.  When I open the same file in
 the
  DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
  raw image looks just fine and can be tweaked.
 
  So I have to assume that this is a serious bug in UFRaw and I have
 reported
  it as such.  I'm just confused that I have not heard other people
  complaining
  about this problem.
 
  Regards,
  --
  Jeff
 
  ___
  gimp-user-list mailing list
  List address:gimp-user-list@gnome.org
  List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
  List archives:   https://mail.gnome.org/archives/gimp-user-list
 

 --001a11c2ef8064e2f704f65119ee
 Content-Type: text/html; charset=ISO-8859-1
 Content-Transfer-Encoding: quoted-printable

 div dir=3DltrCan you provide an example image to confirm
 this?divbr=
 /divdivThanks,/divdivPartha/div/divdiv
 class=3Dgmail_extra=
 brbrdiv class=3Dgmail_quoteOn Sat, Apr 5, 2014 at 3:11 PM, Jeffery
 S=
 mall span dir=3Dltrlt;a href=3Dmailto:j...@cjsa.com;
 target=3D_blan=
 kj...@cjsa.com/agt;/span wrote:br
 blockquote class=3Dgmail_quote style=3Dmargin:0 0 0
 .8ex;border-left:1p=
 x #ccc solid;padding-left:1exAlexander Rabtchevich lt;a
 href=3Dmailto:=
 alexander.v.rabtchev...@gmx.netalexander.v.rabtchev...@gmx.net/agt;
 wr=
 ites:br

 br
 gt;When you look at an imported image in darktable without applying
 anybr=
 
 gt;corrections, the program shows you the embedded preview, which was
 made=
 br
 gt;by the camera itself with all the corrections it (the camera) would
 mad=
 ebr
 gt;with the original RAW when converting it to jpg. If you applyin UFRaw
 a=
 br
 gt;camera curve, similar to the one in darktable, you will see the
 similar=
 br
 gt;result...br
 br
 It#39;s true that the lion image imported into UFRaw is terribly over
 expo=
 sed,br
 but that is something that UFRaw is doing to the raw data. =A0The
 original=
 br
 image has proper exposure which was confirmed at the time the picture
 wasb=
 r
 shot as well as the proper exposure from the companion JPEG image (I
 shoot=
 br
 RAW+JPG). =A0In UFRaw the histogram is shoved completely to the right
 edge=
 br
 of the spectrum and there is no way to use this tool to fix the picture
 as=
 br
 most of the image detail is already lost. =A0When I open the same file in
 t=
 hebr
 DiMAGE Image Viewer software from Minolta (on a Windows XP machine),
 thebr=
 
 raw image looks just fine and can be tweaked.br
 br
 So I have to assume that this is a serious bug in UFRaw and I have
 reported=
 br
 it as such. =A0I#39;m just confused that I have not heard other people
 com=
 plainingbr
 about this problem.br
 br
 Regards,br
 --br
 Jeffbr
 br
 ___br
 gimp-user-list mailing listbr
 List address: =A0 =A0a href=3Dmailto:gimp-user-list@gnome.org
 gimp-user-=
 l...@gnome.org/abr
 List membership: a href=3D
 https://mail.gnome.org/mailman/listinfo/gimp-us=
 er-list target=3D_blank
 https://mail.gnome.org/mailman/listinfo/gimp-use=
 r-list/abr
 List archives: =A0 a href=3D
 https://mail.gnome.org/archives/gimp-user-lis=
 t target=3D_blankhttps://mail.gnome.org/archives/gimp-user-list
 /abr
 /blockquote/divbr/div

 

Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Gary Aitken

 Can you provide an example image to confirm this?
 
 Sure.  Let's use the clouds photo since it is a more modern Sony
 format and pretty dramatically shows the loss of information.  Point
 your browser here:
 
 http://smallthoughts.com/photos/misc/GIMP/clouds.arw

Looks like a normal image when opened here (fbsd, ufraw 0.19.2).
Underexposed, but can be brought up to 1.49 w/out any overexposure
blinkies.  Clouds have lots of definition.  WB (Camera WB) looks fine.
A little *tiny* bit of purple fringing; I'd be delighted if all
mine had that little.

You don't have the color profile, gamma, and linearity set to something
strange, do you?  If I set to no profile, gamma=0.45, linearity 0.1
all looks good.
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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Jeffery Small
Partha Bagchi parth...@gmail.com writes:

Can you also put the jpg you shot since that tells me what you are
expecting to see?

As an aside you may want to visit Dave Coffin's page and read the FAQ
especially about gamma and linearity.

The jpg images look very much like what you see in the Darktable images
provided on the webpage.

Antonio Montagnani and Patrick Shanahan also provided feedback regarding
loading my test image into UFRaw.  Thank you all for the valuable feedback.
I admit to certainly not being well versed in using UFRaw and appreciate all
the pointers being provided.

One thing I had missed before but do see now, is a warning symbol next
to the white balance button.  This does not appear for the Minolta .mrw
images but seems to always display for the Sony .arw files.  When you hover
over it, it states Cannot use camera white balance.  That is why Auto is
being selected in place of Daylight.  It makes me wonder what other raw
file data is not being processed by UFRaw for these types of files?  And I
wonder if there is something particularly amiss with the Ubuntu build of
UFRaw on my system?  When others load the sample file, are you seeing a
better image than the one I have posted, prior to making any corrections?
When you load other types of raw images, does UFRaw display them close to
the accurate (i.e., camera) settings?  If so, what version of UFRaw and what
type of system/OS are you using?

Thanks again for all the valuable help.

Regards,
-- 
Jeff




On Sat, Apr 5, 2014 at 4:11 PM, Jeffery Small j...@cjsa.com wrote:

 Partha Bagchi parth...@gmail.com writes:

 Can you provide an example image to confirm this?

 Sure.  Let's use the clouds photo since it is a more modern Sony format and
 pretty dramatically shows the loss of information.  Point your browser
 here:

 http://smallthoughts.com/photos/misc/GIMP/clouds.arw

 and save the image.  This is a 24-Mb image file taken with an Alpha a77
 camera.

 Thanks for looking at this.  Let me know if I can provide any additional
 info.

 Regards,
 --
 Jeff

 On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:

  Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:
 
  When you look at an imported image in darktable without applying any
  corrections, the program shows you the embedded preview, which was made
  by the camera itself with all the corrections it (the camera) would
 made
  with the original RAW when converting it to jpg. If you applyin UFRaw a
  camera curve, similar to the one in darktable, you will see the similar
  result...
 
  It's true that the lion image imported into UFRaw is terribly over
 exposed,
  but that is something that UFRaw is doing to the raw data.  The original
  image has proper exposure which was confirmed at the time the picture
 was
  shot as well as the proper exposure from the companion JPEG image (I
 shoot
  RAW+JPG).  In UFRaw the histogram is shoved completely to the right edge
  of the spectrum and there is no way to use this tool to fix the picture
 as
  most of the image detail is already lost.  When I open the same file in
 the
  DiMAGE Image Viewer software from Minolta (on a Windows XP machine), the
  raw image looks just fine and can be tweaked.
 
  So I have to assume that this is a serious bug in UFRaw and I have
 reported
  it as such.  I'm just confused that I have not heard other people
  complaining
  about this problem.
 
  Regards,
  --
  Jeff
 
  ___
  gimp-user-list mailing list
  List address:gimp-user-list@gnome.org
  List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
  List archives:   https://mail.gnome.org/archives/gimp-user-list
 

 --001a11c2ef8064e2f704f65119ee
 Content-Type: text/html; charset=ISO-8859-1
 Content-Transfer-Encoding: quoted-printable

 div dir=3DltrCan you provide an example image to confirm
 this?divbr=
 /divdivThanks,/divdivPartha/div/divdiv
 class=3Dgmail_extra=
 brbrdiv class=3Dgmail_quoteOn Sat, Apr 5, 2014 at 3:11 PM, Jeffery
 S=
 mall span dir=3Dltrlt;a href=3Dmailto:j...@cjsa.com;
 target=3D_blan=
 kj...@cjsa.com/agt;/span wrote:br
 blockquote class=3Dgmail_quote style=3Dmargin:0 0 0
 .8ex;border-left:1p=
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 image has 

Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-05 Thread Partha Bagchi
I admit I missed your previous image and so apologies I don't know what
Darktable shows.

When I processed in UFRaw (version 0.20, my build and part of my Gimp build
for Windows 64-bit), It looks fine. I set the exposure to -1.48,
White-balance to Daylight.

If I play a little more with the curves, I get results similar to Photoshop
CC with ACR 8.3. So, I don't think you are missing anything.

I did process in Gimp 2.9 with UFRaw 16-bit.

Hope that helps.

Partha




On Sat, Apr 5, 2014 at 10:00 PM, Jeffery Small j...@cjsa.com wrote:

 Partha Bagchi parth...@gmail.com writes:

 Can you also put the jpg you shot since that tells me what you are
 expecting to see?

 As an aside you may want to visit Dave Coffin's page and read the FAQ
 especially about gamma and linearity.

 The jpg images look very much like what you see in the Darktable images
 provided on the webpage.

 Antonio Montagnani and Patrick Shanahan also provided feedback regarding
 loading my test image into UFRaw.  Thank you all for the valuable feedback.
 I admit to certainly not being well versed in using UFRaw and appreciate
 all
 the pointers being provided.

 One thing I had missed before but do see now, is a warning symbol next
 to the white balance button.  This does not appear for the Minolta .mrw
 images but seems to always display for the Sony .arw files.  When you hover
 over it, it states Cannot use camera white balance.  That is why Auto is
 being selected in place of Daylight.  It makes me wonder what other raw
 file data is not being processed by UFRaw for these types of files?  And I
 wonder if there is something particularly amiss with the Ubuntu build of
 UFRaw on my system?  When others load the sample file, are you seeing a
 better image than the one I have posted, prior to making any corrections?
 When you load other types of raw images, does UFRaw display them close to
 the accurate (i.e., camera) settings?  If so, what version of UFRaw and
 what
 type of system/OS are you using?

 Thanks again for all the valuable help.

 Regards,
 --
 Jeff




 On Sat, Apr 5, 2014 at 4:11 PM, Jeffery Small j...@cjsa.com wrote:

  Partha Bagchi parth...@gmail.com writes:
 
  Can you provide an example image to confirm this?
 
  Sure.  Let's use the clouds photo since it is a more modern Sony format
 and
  pretty dramatically shows the loss of information.  Point your browser
  here:
 
  http://smallthoughts.com/photos/misc/GIMP/clouds.arw
 
  and save the image.  This is a 24-Mb image file taken with an Alpha a77
  camera.
 
  Thanks for looking at this.  Let me know if I can provide any additional
  info.
 
  Regards,
  --
  Jeff
 
  On Sat, Apr 5, 2014 at 3:11 PM, Jeffery Small j...@cjsa.com wrote:
 
   Alexander Rabtchevich alexander.v.rabtchev...@gmx.net writes:
  
   When you look at an imported image in darktable without applying any
   corrections, the program shows you the embedded preview, which was
 made
   by the camera itself with all the corrections it (the camera) would
  made
   with the original RAW when converting it to jpg. If you applyin
 UFRaw a
   camera curve, similar to the one in darktable, you will see the
 similar
   result...
  
   It's true that the lion image imported into UFRaw is terribly over
  exposed,
   but that is something that UFRaw is doing to the raw data.  The
 original
   image has proper exposure which was confirmed at the time the picture
  was
   shot as well as the proper exposure from the companion JPEG image (I
  shoot
   RAW+JPG).  In UFRaw the histogram is shoved completely to the right
 edge
   of the spectrum and there is no way to use this tool to fix the
 picture
  as
   most of the image detail is already lost.  When I open the same file
 in
  the
   DiMAGE Image Viewer software from Minolta (on a Windows XP machine),
 the
   raw image looks just fine and can be tweaked.
  
   So I have to assume that this is a serious bug in UFRaw and I have
  reported
   it as such.  I'm just confused that I have not heard other people
   complaining
   about this problem.
  
   Regards,
   --
   Jeff
  
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  --001a11c2ef8064e2f704f65119ee
  Content-Type: text/html; charset=ISO-8859-1
  Content-Transfer-Encoding: quoted-printable
 
  div dir=3DltrCan you provide an example image to confirm
  this?divbr=
  /divdivThanks,/divdivPartha/div/divdiv
  class=3Dgmail_extra=
  brbrdiv class=3Dgmail_quoteOn Sat, Apr 5, 2014 at 3:11 PM,
 Jeffery
  S=
  mall span dir=3Dltrlt;a href=3Dmailto:j...@cjsa.com;
  target=3D_blan=
  kj...@cjsa.com/agt;/span wrote:br
  blockquote class=3Dgmail_quote style=3Dmargin:0 0 0
  .8ex;border-left:1p=
  x #ccc solid;padding-left:1exAlexander Rabtchevich lt;a
  href=3Dmailto:=
  

Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-04 Thread Gary Aitken
On 04/04/14 20:43, Jeffery Small wrote:
 
 Ubuntu 13.10 system running on an Asus U56E system
 UFRaw ver. 0.19.2
 Dcraw ver. 9.19.1
 GIMP ver. 2.8.6
 Darktable ver. 1.2.3
 Shotwell ver. 0.15.0
 
 I reported on this a long while ago and then got very busy with other
 things.  This is a follow-up with details.
 
 When attempting to load Minolta (mrw) and Sony (arw) raw image files into
 GIMP, UFRaw is not properly processing them.  The following webpage has
 images which demonstrate the problem:
 
 http://smallthoughts.com/photos/misc/GIMP/index.html
 
 The raw files are being imported with distorted color and contrast.
 However, as the additional images show, other programs such as Darktable
 and Shotwell are importing and displaying these files properly.
 
 Has anyone else been experiencing similar problems, and is there any known
 solution?

This is kind of a shot in the dark.  I don't know anything about shotwell, 
and not much about darktable.  But I know darktable automatically applies
an exposure correction curve to the raw file when it imports it, and ufraw
does not (unless you set one as the default).  You might look at the 
exposure correction curve darktable applies and see what it looks like when
you apply a similar curve in ufraw.  There may be other automagic things
darktable does in regards to color; not sure.

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Re: [Gimp-user] Problem importing raw Minolta and Sony files

2014-04-04 Thread Alexander Rabtchevich

Hello.

Darktable applies RGB camera curve, uses enhanced camera color matrix 
and applies a little sharpening by default.


Jeffery Small wrote:

Ubuntu 13.10 system running on an Asus U56E system
UFRaw ver. 0.19.2
Dcraw ver. 9.19.1
GIMP ver. 2.8.6
Darktable ver. 1.2.3
Shotwell ver. 0.15.0

I reported on this a long while ago and then got very busy with other
things.  This is a follow-up with details.

When attempting to load Minolta (mrw) and Sony (arw) raw image files into
GIMP, UFRaw is not properly processing them.  The following webpage has
images which demonstrate the problem:

http://smallthoughts.com/photos/misc/GIMP/index.html

The raw files are being imported with distorted color and contrast.
However, as the additional images show, other programs such as Darktable
and Shotwell are importing and displaying these files properly.

Has anyone else been experiencing similar problems, and is there any known
solution?

Regards.


With respect,
Alexander Rabtchevich
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