brettdespain
Posts: 126
Joined: Wed May 18, 2005 5:40 am

Color Shifts After Upload To A.net

Fri Nov 18, 2005 5:15 pm

Hi all,

Has anyone noticed color shifts and/or differences in saturation from the file you have on your computer to what the same file looks like after uploading to A.net?

I use a calibrated monitor with ProPhoto RGB operating as my system ICC color profile. I also do all my editing in CS2 or Silverfast using ProPhoto RGB as well in 16 bit mode. After uploading to A.net the photo loses saturation and the color shifts slightly grey.

I have also tried converting my files to an ICC profile that is not as wide such as Adobe RGB and sRGB before uploading to A.net. The result is the same as before.

In the past, I have always uploaded my files with the ICC profile embedded in them, thinking that way the files would have a better chance to be displayed correctly and up till now, I've been happy with the results. Now, I'm not so sure that embedding any ICC profile is wise.

Any opinions or ideas about this? This seems to be a recent occurence for me. Either the uploading software at A.net has changed or I'm doing something wrong here, although I haven't changed my workflow at all.

Thanks in advance for your responses. It sure is fun seeing all of your shots!

Brett
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ChrisH
Posts: 1120
Joined: Mon Jul 26, 2004 4:25 am

RE: Color Shifts After Upload To A.net

Fri Nov 18, 2005 5:58 pm

You need to convert to sRGB before uploading. IE is not ICC-aware.
what seems to be the officer, problem?
 
brettdespain
Posts: 126
Joined: Wed May 18, 2005 5:40 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 12:16 am

Thanks Chris, I'll try doing that again. I'm using Safari and Firefox as my primary browsers, not IE.

....update. I just tried Chris' suggestion and it appears that after you convert to the sRGB profile using photoshop CS2, you must save your working file first before using the command "save for web" in order to get a color correct image to upload to A.net. If you don't save your working file first before attempting to "save for web" photoshop CS2 uses the default colors of the image when it was opened when saving for web.

Using the above process, I uploaded a new file to A.net and I got the correct colors.

Perhaps some of you knew this but maybe this will help someone like me who didn't.

Cheers.
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LIPH
Posts: 841
Joined: Mon May 17, 2004 6:29 pm

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 12:42 am

It's good to know.....

Regards
Life sucks. Then you die. Live fast, die young.
 
ChrisH
Posts: 1120
Joined: Mon Jul 26, 2004 4:25 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 1:15 am

Never use "Save for web". Always use "Save As..." And then JPG and Quality 12.

Save for web will compress too much. You want minimum compression for a.net uploads.
what seems to be the officer, problem?
 
aviopic
Posts: 2423
Joined: Sat Mar 13, 2004 7:52 pm

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 4:42 am

Quoting Brettdespain (Reply 2):
Thanks Chris, I'll try doing that again. I'm using Safari and Firefox as my primary browsers, not IE.

Has nothing to do with Safari, Firefox or IE.
Internet only supports sRGB.

Quoting ChrisH (Reply 4):
Never use "Save for web". Always use "Save As..." And then JPG and Quality 12.

 checkmark 

Willem
The truth lives in one’s mind, it doesn’t really exist
 
ChrisH
Posts: 1120
Joined: Mon Jul 26, 2004 4:25 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 6:40 am

Quoting Aviopic (Reply 5):
Has nothing to do with Safari, Firefox or IE.
Internet only supports sRGB.

If the browser was ICC aware it could display a jpg with Adobe RGB profile embedded properly just as photoshop does.
what seems to be the officer, problem?
 
YANQUI67
Posts: 358
Joined: Thu Jan 27, 2005 2:57 pm

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 7:55 am

Quoting ChrisH (Reply 4):
Never use "Save for web". Always use "Save As..." And then JPG and Quality 12.

Save for web will compress too much. You want minimum compression for a.net uploads.

Can you please elaborate on this. I always use "save for web". If i use "save as" the file is too large to upload. Thank you for your help.
 
ChrisH
Posts: 1120
Joined: Mon Jul 26, 2004 4:25 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 8:04 am

Yanqui, the only way I've gotten a file to exceed 1Mb is by saving a 1600x @ quality 12. A 1024x jpg at 12 would not exceed filesize. Sure you're saving as jpg?
what seems to be the officer, problem?
 
YANQUI67
Posts: 358
Joined: Thu Jan 27, 2005 2:57 pm

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 11:24 am

Hey ChrisH, I will try that tonight,Thanks!
 
dc10tim
Posts: 1380
Joined: Mon Jan 03, 2005 12:21 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 11:35 am

Hi guys I started a thread not long ago about this and still have problems in Photoshop, so now I just don't colour manage at all when editing. Not sure what effect this has, but the result in Photshop looks the same as the uploaded image.

Regards,

Tim.
Obviously missing something....
 
jay767
Posts: 221
Joined: Tue Nov 15, 2005 5:50 am

RE: Color Shifts After Upload To A.net

Sat Nov 19, 2005 11:52 am

Are you shooting in RAW,because I ran into this same problem,the fix is to go to edit then color settings then choose web graphics default from the settings drop down menu,after you do this you can still save the jpeg at a quality level of 12 if you wish,although I don't shoot in RAW for a.net as there is no need to,hope this helps.
 
brettdespain
Posts: 126
Joined: Wed May 18, 2005 5:40 am

RE: Color Shifts After Upload To A.net

Sun Nov 20, 2005 9:06 am

Hi all,
Hey here's the scoop on the "Save for web" versus "Save as" question. I believe that ChrisH is right, most of my successful uploads to a.net I have simply saved using the "save as.." command. However, I have successfully uploaded using the "save for web" command as well and here's when it comes in handy: I shoot RAW files and after coming out of Camera Raw, I end up with a file width of about 1500 pix. After I do some minor tweeking, I resize the file to 1200 pix and then sharpen. After saving, the image is usually smack dab between 950kb and 1mb at the highest quality (12) jpeg setting. Occasionally, the file size will exceed 1mb.

This is where "Save for web.." can come in handy: after choosing save for web in photoshop CS2, there is a small triangle button in the top right corner of the frame. One of the options there is to specify what file size you want the "Save for web.." command to output for the final saved file. If you specify about 990kb, photoshop will find the best quality setting to achieve your specified file size. This usually results in a setting of between 98% and 99% quality setting versus the full 100% setting.

Your other option if your file size exceeds 1mb is to do multiple un-do's. Un-do your sharpening, un-do your image sizing, resize at a smaller image setting, re-sharpen and resave. That's five steps versus two using the "save for web.." command. To re-empasize, this is assuming your file is just over 1mb. If your file size is way over the 1mb limit, your only option is to resize and resave the file using the "save as command" because if you don't, using the "save for web.." command will overly compress your image.

Again, I think "save as.." is your best bet, but using "save for web.." can also work if you file size is just barely breaking the 1mb file limit for a.net uploading.
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Q330
Posts: 1425
Joined: Sat Dec 13, 2003 5:30 pm

RE: Color Shifts After Upload To A.net

Sun Nov 20, 2005 3:12 pm

Quoting Brettdespain (Reply 12):
After saving, the image is usually smack dab between 950kb and 1mb at the highest quality (12) jpeg setting. Occasionally, the file size will exceed 1mb.

If the size is above 1mb, I always just knock the jpeg quality down to 11. The compression is virtually imperceptible.

-Q
Long live the A330!
 
brettdespain
Posts: 126
Joined: Wed May 18, 2005 5:40 am

RE: Color Shifts After Upload To A.net

Mon Nov 21, 2005 3:04 am

Quoting Q330 (Reply 13):
If the size is above 1mb, I always just knock the jpeg quality down to 11. The compression is virtually imperceptible.

Yup, you could do that to. Although A.net guidelines suggest you always leave the jpeg setting at the highest quality setting. However, I agree with you the difference is very hard to see.

Q, nice photos BTW.  Smile
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