Forum: Photography


Subject: JPEG comperssion and color loss

Randys opened this issue on Dec 04, 2003 ยท 6 posts


Randys posted Thu, 04 December 2003 at 7:52 AM

I'm having problems maintaining the original colors of an image after I compress it into JPEG. Is there a better way of of doing this rather than manipulating the original to adjust for the JPEG? I'm currently doing it by trial and error.


3DGuy posted Thu, 04 December 2003 at 10:59 AM

Maybe you could try PNG and see how the colors hold up in that.

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Randys posted Thu, 04 December 2003 at 1:00 PM

I just tried a couple there is less color loss in the png file but it is to large to use on the web


DHolman posted Thu, 04 December 2003 at 3:20 PM

Color change? That's not usually a sign of JPEG compression. How are you saving the images? It kind of sounds like a colorspace issue. I had the same problem when I first started using AdobeRGB as my colorspace. Was saving as JPEG and there was a serious shift in colors. I found I had to convert my colorspace to sRGB first to get a good approximation. The biggest problem is that if you save for web, you will never get the exact colors because web browsers don't color manage. -=>Donald


Randys posted Thu, 04 December 2003 at 3:48 PM

That may be my issue I have been saving for web. I'll give that a try. Thanks


DHolman posted Thu, 04 December 2003 at 11:02 PM

Randy - Just remember, if you are sending the jpeg up onto the web, using Save for Web is the way to go. If you just save it as a normal Jpeg under SAVE AS then you also get a bunch of stuff appended to the image in the header that can effect some people using certain browsers (the image will either not display or in some cases can lock up their browser). -=>Donald