Instead of taking pictures of circuit boards, why not scan them. The results are very good.

“An image scanner can make great pictures of circuit boards. Not only are the pictures clear, they are very high resolution and have nearly perfect scaling. Perfect scaling means that you can actual make measurements from the image. Try that with a digital camera!

I picked up the pictured Artec scanner for about $20 some time ago. It is close to useless and takes the worse scans I have seen. But even so, it can be used to make usable PCB images.”