I've been asked at work to look into the idea of photographing drawings using a digital camera in order to save costs on having thousands of scans done. My approach will be to do a few tests using a D200 and 50mm lens to get an idea of what can be achieved and if the quality is likely to be satisfactory.

If it's decided to go the photographic route, I'll be recommending my company buys a camera, macro lens and some lights to do the job - I'm not going to wear out my equipment for them!

Has anyone tried copying technical drawings with a digital camera? Would lines on a A0 drawing as thin as 0.18mm be visible on an 11MP camera?

It's said that people who ask for advice usually know the answer anyway. So just tell me I need a Nikon D3 with 105mm macro lens, and I promise to nurse it carefully in its dotage when the job is done ...