Just to add another option to the discussion:
I found these type of camera's:
http://www.ebay.com/itm/High-Resolution ... 2156175727
It is basically a high-res industrial usb camera, with interchangeable lenses
An lens is available for $30 dollars or less, for example: http://www.ebay.com/itm/50mm-F1-4-C-Mou ... 2f02a62508
(Not sure which lens to pick for scanning, above is an example)
So about $300 total for one complete camera that according to the specs is compatible with usb drivers. If one doesn need the high-res, there are cheaper options available.
What are your thoughts, anyone tried such a camera? I hope it could provide a long lasting camera, that is designed to take a lot of pictures fast. I am tempted to test them or something similar.
See below for advertised specs of above camera:
High Quality, High Resolution, Clear Images
Big size 1/2.33 inch Japanese CMOS, hardware 16MP resolution.
Standard USB2.0 connector, transmission rate up to 480MPS.
Brightness, contrast, Saturation, acutance and gamma are adjustable in software we provide.
Standard UVC framework, applicable with Windows, MAC system.
Max. resolution 4608x 3456.
Model: USB2.0 output
Image equipment: Panasonic MN34120 1/2.33
Full Resolution: 4632x3488
Pixel size: 1.335UM*1.335UM
Frame rate: 16M/ 5 fps, 4M (2304 x 1688)/ 20 fps
Power supply: USB 5V
White Balance: continuous/ single/ manual
Exposure Mode: Auto/ key control/ manual
Exposure Compensation: 1-16
Time of Exposure: 999ms or smaller
Contrast Ratio: Support
UVC: UVC, WIN/MAC