Blurry images
The reason you are getting blurry images is your hand is moving during a long shutter opening. The best solution is a sturdy tripod. The problem is though will the museum allow you to use the tripod?
Probably not since it takes up allot of space and is rather intrusive. Also They actually know that any image you get with a a hand held no flash shoot will be to poor to use for repros but with a tripod you could get very good images that you could then reproduce and sell. And this is something that they definitely do not want.
Another solution but not as good is a monopod this is like it sounds a single pole or staff with a tripod like mount on the top. These are used a lot by nature photographers to help support and steady long telephoto lenses. It is not ideal but it can be carried along as you go and it does not take up the space of setting up a tripod.
You can buy one of these or make one from a staff and a tripod head that you can get from a photo supply (or a old cheap tripod if you have one you no longer use). I did the later since I had a cheap tripod that was really to light and flimsy to be of any real use as a tripod but it's head worked great once I attached it to a walking staff for a monopod.
Also you can just get a wooden staff with a length to bring your camera about eye level or about as high as the center of most of the paintings as they hang on the wall. Then get a threaded rod the kind that has a machine thread on one end and a wood thread on the other. The thread should match the size of your tripod mount thread (I can't remember the size but it will be a course thread bring you camera to a hardware store and just try them out until you find the one that fits.
Now drill a hole in the center of the top of the staff and with some epoxy glue (the 5min kind will do) the threaded rod into the staff so only about 2 to three threads show. That way when it is screwed on to your camera the top of the staff will tighten to the bottom of the camera's mount.
There you have a monopod for about $12 US dollars (that's if you buy the wooden staff if you have a old broom handle or cut down a tree it will be even cheaper.
Also you can put a rubber end like you see on canes on the bottom (you can find those at the hardware store also) then it will not slip on the floor.
The monopod only helps steady your hand so you want to open your lens aperture as wide as you can and use the fastest shutter speed you can and still get a good exposure. Then take a breath the hold it keep very steady through the exposure and hope for the best.
Also you can set the ISO setting of your camera to 400 (I think the coolpic 900 has that setting) you will not get as clean a image as when it is set to 100 ISO but you can shoot in low light with faster shutter speeds and that will help in getting blur free images.
Well, good luck.
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