Partha Bagchi <partha1b 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 <jeff cjsa com> wrote:
Alexander Rabtchevich <alexander v rabtchevich 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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<div dir=3D"ltr">Can you provide an example image to confirm
this?<div><br>=
</div><div>Thanks,</div><div>Partha</div></div><div
class=3D"gmail_extra"><=
br><br><div class=3D"gmail_quote">On Sat, Apr 5, 2014 at 3:11 PM, Jeffery
S=
mall <span dir=3D"ltr"><<a href=3D"mailto:jeff cjsa com"
target=3D"_blan=
k">jeff cjsa com</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0
.8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Alexander Rabtchevich <<a
href=3D"mailto:=
alexander v rabtchevich gmx net">alexander v rabtchevich gmx net</a>>
wr=
ites:<br>
<br>
>When you look at an imported image in darktable without applying
any<br=
>corrections, the program shows you the embedded preview, which was
made=
<br>
>by the camera itself with all the corrections it (the camera) would
mad=
e<br>
>with the original RAW when converting it to jpg. If you applyin UFRaw
a=
<br>
>camera curve, similar to the one in darktable, you will see the
similar=
<br>
>result...<br>
<br>
It'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
was<b=
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=
he<br>
DiMAGE Image Viewer software from Minolta (on a Windows XP machine),
the<br=
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'm just confused that I have not heard other people
com=
plaining<br>
about this problem.<br>
<br>
Regards,<br>
--<br>
Jeff<br>
<br>
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">gimp-user-=
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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</a><br>
List archives: =A0 <a href=3D"
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t" target=3D"_blank">https://mail.gnome.org/archives/gimp-user-list
</a><br>
</blockquote></div><br></div>
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