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 Replies: 6 / Views: 1,568 |
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Pillar of the Community
United States
509 Posts |
This has probably been covered before. Not sure as this is first time on the forum. But...why don't the colors in my pix look the same once I get em on the computer? When they're in the camera, they look fine but on the computer, all the colors change. Specifically, I'm shooting Morgans and I always seem to get a gold tint on the computer display that's not there on the coin or in the camera. Using PSElements 8, I always have to try and adjust but never do get it exactly. I'm using a point and shoot Casio 7mp with a copy stand and tent.
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Moderator
 United States
23522 Posts |
I'm guessing that you're looking at a white balance difficulty, based on your use of "gold" to describe the wrong color. The viewfinder of your camera is a cost and size compromise - they all are - and it may not be physically capable of displaying the problem. If you're looking through an optical viewfinder on your camera, you will never see the problem. Many digital cameras have difficulty adjusting for tungsten lighting.
Your monitor color calibration is a possibility, but I suspect in that case you'd see it as "reddish" or "bluish" rather than "gold."
Here's a test: Isolate the Yellow color channel, and reduce its' Saturation by 30-40%. If that brings the color in line, it's a white balance problem.
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Pillar of the Community
 United States
509 Posts |
SuperDave, Couldn't find in PS Elements any way to isolate the yellow. Just the Red, Green or Blue or the RGB together. So just took some more pix playing with the white balance and came out with some very good results at least compared to before. The gold toning in the pic below around the edges look almost exactly as is when held in hand and the rest of the coin's surface colors appear to be true. The only exception is the gold toning just below the date and the bottom edge which is exaggerated and not on the coin so I need to do a little more fiddling. There are some lighting problems in it (glares) as I was using direct lighting without the tent but that's a separate issue and think I'll be able to deal with it. Not sure what "cost and size compromise" means. Is that referring to what's actually viewable in the optical viewfinder?  |
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Moderator
United States
23522 Posts |
Holy cow, PS Elements doesn't support CMYK. That's wretched; working in CMYK instead of RGB is the only easy way to remove improper tungsten white balance. The Gimp does that natively; I never suspected Elements wouldn't.
However, you've achieved what seems to be a nice result. I suspect what you're seeing as the "extra" gold at the bottom might actually be there, but only visible under the right angle of bright light. That's an excellent image, especially shot through a slab.
You have my reference to "cost and size compromise" exactly right. Camera viewfinders are limited by the size of the camera, of course, and the expense of a *really* accurate display isn't justifiable in a camera they're trying to bring in at a certain price point. So, the resolution of these displays is less than it could be, as well as the color accuracy.
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Pillar of the Community
United States
509 Posts |
Thanks Dave and you might be right on the "extra" gold at the bottom. And given your seeming surprise about the lack of CMYK support in Elements, makes me think I might have missed it. Gonna go back and do more digging. I'm not overly familiar with the software.
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Pillar of the Community
United States
509 Posts |
Dave, went through the Elements help files and they say CMYK isn't supported. But the info you gave me re white balance seems like just the ticket. Sure helped me clean up this coin. Thanks again. Went ahead and downloaded Gimp. Maybe with the CMYK it will save a little extra work in unnecessary camera shots.
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Moderator
United States
23522 Posts |
Yeah, I did my own research on Elements and discovered it didn't support CMYK. If you're comfortable in Elements, you'll find the Gimp similar. I feel it has better control over color and filters (especially Sharpen and Selective Gaussian Blur to remove noise) than Photoshop.
The Sharpen filter is so good I've all but quit using Unsharp Mask.
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Replies: 6 / Views: 1,568 |
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Posted 12/17/2010 7:42 pm
