Simple Question, I Hope…

J
Posted By
Jim Nazaruk
Jun 10, 2005
Views
165
Replies
2
Status
Closed
I am editing some images my boss wants to put into a website. The images are from an application and not from the web. He did the originals by doing screen captures, highlighting the areas he wanted to accent in MS Paint, then he reduced the size of the images from 800 x 600 pixels to 640 x 480 pixels.

Most of the images came out ok, but some of the images that had gray in them went from a gray (hex CCCCCC) to a kind of sickly green (hex C0DCC0). When I take the greenish version into PhotoShop and check the color in ‘web safe’ colors, it comes up as gray (hex CCCCCC0): but under ‘all colors’ in the color picker, it comes up the sickly green (hex C0DCC0).

Now to some of you that have taken classes in, and studied, PhotoShop this is probably a simple problem with a simple solution. I, on the other hand, have taught myself how to use the application by trial and error. I am proud of the stuff I have learned to do in the program, however, I have never run into this situation before.

So, what I am asking you, the experts, is why is this happening? Is it because he’s saving the screen capture in the wrong color settings (all colors) or is it a result of the size reduction – or is it a combination of the two? He asked me and I couldn’t give him an answer, though I am inclined to think it is because he didn’t save it in web safe colors to start with.

I would appreciate if one of you could enlighten me as to why this problem occurred.

Thanks in advance if you can help me out!

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MR
Mike Russell
Jun 10, 2005
C0DCC0). When I take the greenish version into PhotoShop and check the color in ‘web safe’ colors, it comes up as gray (hex CCCCCC0): but under ‘all colors’ in the color picker, it comes up the sickly green (hex C0DCC0).
….
So, what I am asking you, the experts, is why is this happening? Is it because he’s saving the screen capture in the wrong color settings (all colors) or is it a result of the size reduction – or is it a combination of the two?

I get the same numeric values when I convert an RGB image to index color, using the Windows System Palette. The sickly green happens to be the mathmatically closest color to the appropriate gray that the software is able to find.

If possible, have your boss use a 24 bit monitor, and save the screen captures to 24 bits. Then you can save the images as web safe indexed files. I often use jpegs for screen shots, even for windows that contain no raster images. If you do this, keep the quality high enough to avoid "mosquitos".

As an experiment, convert a white->black gradient to indexed, turn on preview, and check out the various pallette choices. The windows system injects a lot of random color banding, presumably because there are so few shades of gray.

Mike Russell
www.curvemeister.com
J
Jim Nazaruk
Jun 10, 2005
Thanks Mike!

I neglected to mention that the captures were saved as a 24 bit .bmp format. Atleast now I have a clue about why that happened.

Once again, thanks!

"Mike Russell" wrote in message
C0DCC0). When I take the greenish version into PhotoShop and check the color in ‘web safe’ colors, it comes up as gray (hex CCCCCC0): but under ‘all colors’ in the color picker, it comes up the sickly green (hex C0DCC0).

So, what I am asking you, the experts, is why is this happening? Is it because he’s saving the screen capture in the wrong color settings (all colors) or is it a result of the size reduction – or is it a combination of the two?

I get the same numeric values when I convert an RGB image to index color, using the Windows System Palette. The sickly green happens to be the mathmatically closest color to the appropriate gray that the software is able to find.

If possible, have your boss use a 24 bit monitor, and save the screen captures to 24 bits. Then you can save the images as web safe indexed files. I often use jpegs for screen shots, even for windows that contain no
raster images. If you do this, keep the quality high enough to avoid "mosquitos".

As an experiment, convert a white->black gradient to indexed, turn on preview, and check out the various pallette choices. The windows system injects a lot of random color banding, presumably because there are so few shades of gray.

Mike Russell
www.curvemeister.com

Master Retouching Hair

Learn how to rescue details, remove flyaways, add volume, and enhance the definition of hair in any photo. We break down every tool and technique in Photoshop to get picture-perfect hair, every time.

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