Correct bad color

D
Posted By
DLPnet
Jun 22, 2004
Views
508
Replies
6
Status
Closed
Hello all,

I m creating panoramas stitching a lot if images but I have some problems to correct the sky. I tried a lot of thing with no success at all.

I put 2 examples here:
http://dlpnet.free.fr/stlaurentciel.jpg
and
http://dlpnet.free.fr/croscagnesciel.jpg

Does anyone have an idea how to correct the bad matchnig color ?

Thanks a lot,

Dlp
Related Tags
color correct

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N
nomail
Jun 22, 2004
DLPnet wrote:

I m creating panoramas stitching a lot if images but I have some problems to correct the sky. I tried a lot of thing with no success at all.
I put 2 examples here:
http://dlpnet.free.fr/stlaurentciel.jpg
and
http://dlpnet.free.fr/croscagnesciel.jpg

Does anyone have an idea how to correct the bad matchnig color ?

Take your images with your camera set at manual exposure rather than automatic exposure. And keep the exposure the same for all.

—
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
D
DLPnet
Jun 22, 2004
Does anyone have an idea how to correct the bad matchnig color ?

Take your images with your camera set at manual exposure rather than automatic exposure. And keep the exposure the same for all.

thanks, but I know this and I took the picture with manual exposure but the sky changed very quickly. That s why I would like to know if it s possibly to correct the pictures afterwards.

Dlp
N
nomail
Jun 22, 2004
DLPnet wrote:

Does anyone have an idea how to correct the bad matchnig color ?

Take your images with your camera set at manual exposure rather than automatic exposure. And keep the exposure the same for all.

thanks, but I know this and I took the picture with manual exposure but the sky changed very quickly.

Quite frankly, I doubt that. Skies can change quickly indeed, but it’s the clouds that change. The color of a blue sky doesn’t change so much in a few minutes. How could that be? To me, it looks like your exposure changed.

That s why I would like to know if it s
possibly to correct the pictures afterwards.

Of course it is, but it’s not very easy. I use ‘curves’ to do this. And I do it BEFORE stitching (or afterwards, but with the different photos still in different layers). Photoshop CS now has its ‘Match colors’ you can try as well.

If you want to do it on this finished, flattened result, I would suggest that it’s easier to just replace the whole sky than to try to fix this.

—
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
T
tacitr
Jun 22, 2004
Does anyone have an idea how to correct the bad matchnig color ?

Of course. Color correction is one of Photoshop’s strongest capabilities. Image->Adjust->Curves.

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Bart van der Wolf
Jun 22, 2004
"DLPnet" wrote in message
SNIP
Does anyone have an idea how to correct the bad matchnig color ?

http://www.creativepro.com/story/feature/20975.html?cprose=d aily

Click on the Teton technique link for a PDF that descibes the procedure.

Bart
PW
Pjotr Wedersteers
Jun 25, 2004
"Johan W. Elzenga" wrote in message
DLPnet wrote:

Does anyone have an idea how to correct the bad matchnig color ?

Take your images with your camera set at manual exposure rather than automatic exposure. And keep the exposure the same for all.

thanks, but I know this and I took the picture with manual exposure but the sky changed very quickly.

Quite frankly, I doubt that. Skies can change quickly indeed, but it’s the clouds that change. The color of a blue sky doesn’t change so much in a few minutes. How could that be? To me, it looks like your exposure changed.
perhaps colour balance was set to auto, or it were analogue shots and the develop/print process introduced these differences. Also some scanners autocorrect scanned images. (I hate that mostly)

Pjotr

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