 Oscar G. Nonweiler |
How Do I Take Pictures of Fine Art Prints?
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doug Nelson |
The curvature might be coming from your lens. If you shoot this with an SLR, try a 50mm, or better still, a macro lens, used just as you would a 50. Since you have curvature to fix, and PS 6.0, you have a couple of alternatives. First, use the crop tool to draw a neat outline within the borders of your image. When you click in the center of the image, you will have straight lines, but you will lose some image area, as you've cropped it out. The alternative is to crop outside your image, then clone some background into the areas not covered in the crop.
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John A. Lind |
If this is what it looks like in the slide or negative, Doug has correctly identified the culprit. It's called barrel distortion and is caused by your lens. The opposite effect is called pincushion distortion. These two forms of distortion seem to be most common in zoom lenses. I also agree with his recommendation to use a 50mm prime lens if you can. If all you can do is try to correct this with your imaging software, then look for the commands that allow you to distort images and experiment with them to pull the corners back out until the edges are straight. You may have to work with one corner at a time. Do this step first, before doing anything else with the scan, using as high resolution a scan as possible. Downsize the image as a final step. -- John
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doug Nelson |
A word of caution for Photoshop that I should have offered before: Before you play around with this image, save a copy of the original, or a duplicate layer. That way you have your original.
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Paul Cramp |
I find that when I get this problem I am too close. Try going further away, you may lose some definition in the image so you need to find a happy medium. I see from the sample image that around the edges that are curved the canvas has no detail. This would lend itself to being cut off with the crop tool in Photoshop giving you straight edges. Hope this is of help.
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Oscar G. Nonweiler |
Thanks for all your help. Paul seems to have helped me the most; it was a matter of being too close. I moved further away and used the 3x zoom function on my digital camera. Thanks everyone.
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