Joseph,
I'm not familiar with CoolPix, but digital cameras typically have a two-stage shutter button. With the button half-way down, the image is captured and exposure and focus are adjusted. Fully depressing the button activates the recording of the image. Be sure that you're not driving the shutter button down too quickly and missing that capture and adjustment stage (and, invariably, causing camera movement). Sometimes in the excitement of trying to catch action and spontaneity it's hard not to hurry the shot, but to shoot museum pieces, there's no need to rush. Also, take at least two and even three shots of each piece you're interested in -- two from the same vantage and a third from perhaps a foot closer or farther away. One of those shots will surely be better than the other two. (You can do a more sophisticated "bracketing" by fooling around with the aperture and other settings, but I suspect that you don't want to get into that additional complication right now.)
The good news is that if you can't solve the "blurring" problem, then at least when you take photographs of your own work and post them on SOG, no one will tell you your edges are too hard.
Steven
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