[Guest]

Hey guys,

I have seen a number of pictures of cars in a certain red that does not show well in pictures. It looks akward. Can anybody explain this? I dont have photographed red cars yet, so What shall I take as a precaution?

Thanks
Bernard

 

[vegasracer]

Where I've seen it the most is when a member reduces the dimensions of the picture... the effect is called 'dithering'... and they get a grainy, pixelated result. Seems to show up in the reds frequently. In simple terms, the computer throws away data in the reduction process, and sometimes has to interpolate new color data that your browser doesn't have the capacity to understand. Remember that browsers can display only 256 colors, and when they see colors outside of that range (in a reduced jpeg for example) the resulting display can be a bit strange.

 

[StygianMax]

Good question Bernard. That question has been burning in my mind for a while (no pun intended :giggle ) and I just hadn't had the time to post the question. Of all the colours, I find compressing pictures of red cars is the worst. The gradient of the red going from dark to lighter shades is often chunky when I compress the photo down to <60kb.

Thanks for that explanation Dr. Jeff. Is the 256 colours for gif images or does it apply to gif and jpg? For some reason, I thought the colour range was closer to the range of 64kb (minus a few that are 'reserved' for something or other :confused )

 

[Guest]

Bernard, you beat me to this question. :giggle

I have noticed that same thing, especially with my latest pictures, and it is very frustrating. :ranting

Jeff, thanks for your explanation. :cheers

For the Photoshop users: When saving Image for Web, which do you prefer, progressive or optimized? And do you have ICC profile checked?

:feedback

 

[hafamaca]

Taking the photo in raw mode, reduce the dimensions and then save it as a jpg, would that work? I would try that rather than asking, but I don't have a program to read raw files

 

[Guest]

So what can be done about it? Are there any precautions/settings?

I can save them under PSP format and they are perfect, but too many kb