Originally posted by K-9 I took a photo of a deep reddish brown colored horse in front of bright green foliage. The colors were very vibrant in the camera's original RAW file. I converted it in camera to a JPG with no adjustments. I opened it in Photoshop and the colors looked the same. I reduced the size to the requirements here, as I was going to post it in a thread, but when I hit "Preview Post" after attaching it, the colors had faded! The horse was now just a light brown color, with no deep, reddish brown and the foliage had gone to a noticeably paler green.
I still had the Photoshop file open and it looked fine there. I closed it, reopened the same file I was going to post here and it still looked fine at this reduced size opened back up in Photoshop. I then imported the reduced size version to IPhoto and opened it there. The colors were the original vibrant ones, matching camera and Photoshop. I then tried just opening the file in the generic Preview program on my MAC, and the colors were dull, just like when I tried to post here.
So, I am left with two different looking colors of the same jpg:
Colors fine in camera
Colors fine in Photoshop
Colors fine in IPhoto
Colors duller trying to post on this site
Colors duller in Preview on my laptop
I'm stumped??
If the original image has AdobeRGB colorspace, but it's interpreted as sRGB, you may get results like these. I'm a bit confused that they look
much duller in Preview, though, as Preview will obey the colorspace given.
Anyway, you should always use sRGB for web, since most browsers (and notably the most used one) don't understand colorspaces and thinks everything is sRGB.
I recently struggled with this myself, and found this page very helpful:
sRGB Correct ColorSpace Tutorial for the Internet The PROOF! www.gballard.net
Recently, I've done the following before publishing (except on Flickr, which will handle this for you): Opened reduced-size images in Preview, sharpened them and changed the colorspace to sRGB (don't remember the english term for the menu item, but it's on the Tools meny) there before saving them.