Need advice on camera selection

sealcorp

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I have a particular need, and I am hoping the experts here can help! I have a semi-old Scanning Electron Microscope, and was looking to upgrade the photographic capabilities by adding a digital camera. What I need is a USB camera (to be able to do captures of the various specimens on a PC), that can focus at a short distance (from about 8 inches down to about 4 inches), and that is capable of producing a high-resolution picture.

Also, because of the size and shape of the opening, a cylindrical camera body would be preferable, but is not mandatory. And we really need it more for captures than for motion video.

Am I asking too much? I have looked around, and determined that I just don't know what I am looking for! What type(s) of camera would you recommend.

Thanks in advance for any information.
 
I have a particular need, and I am hoping the experts here can help! I have a semi-old Scanning Electron Microscope, and was looking to upgrade the photographic capabilities by adding a digital camera. What I need is a USB camera (to be able to do captures of the various specimens on a PC), that can focus at a short distance (from about 8 inches down to about 4 inches), and that is capable of producing a high-resolution picture.

Also, because of the size and shape of the opening, a cylindrical camera body would be preferable, but is not mandatory. And we really need it more for captures than for motion video.

Am I asking too much? I have looked around, and determined that I just don't know what I am looking for! What type(s) of camera would you recommend.

Thanks in advance for any information.

What is the size of the eyepiece?
 
What is the size of the eyepiece?

Thanks for the quick reply!

The opening is approximately 3" in diameter. The setup is a small CRT mounted inside a small enclosure with the 3" hole as the only opening. Originally there was a polaroid camera connected to the hole with a fixture. When you had a specimen exactly the way you wanted, you switched the video to this CRT, and "snapped" the photo. I have tested this with a smaller, low-resolution digital camera, and it took an excellent photo (given its limited resources), I just need it to be a higher-resolution photo, and better focus at close range.
 

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