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Scanning Coins - What Scanner?
This is a question for the technical geeks out there. For very many
years now I have been using my scanner to take pictures of coins using setups devised after many experiments. An example of one of my coins can be found on http://www.zeno.ru/showphoto.php?photo=85135 I have been using an Epson Perfection 1640SU scanner that is still in excellent working order. However, I have recently changed my computer and found that the scanner cannot work on it as drivers are not available for the Windows 7 (64-bit) Home Premium operating system. There are drivers for the 32-bit version of Windows 7 but those will not work with my scanner. It looks as though I will reluctantly have to look for a replacement. My question is what to go for. I seem to recall reading somewhere that some of the newer models of scanners do not take as good pictures of 3D objects such as coins. I thought there was a thread on this discussion group on this very matter, but cannot seem to find it among the archives on Google Groups. From my memory I think the critical element was the light source used in scanners. The 1640 uses a cold cathode fluorescent (CCF) lamp, but the lamps many modern scanners are white LEDs. While these LEDs are quicker to warm up they have a short depth of focus and are only really suitable for 2D objects like paper or film. They also have a colder spectrum light than the CCF lamps. Has anybody had experience of modern scanners on what, or what not, to go for in respect of taking pictures of coins? I am not so interested now in scanning 35mm films, I did all that years ago. I would welcome hearing other people's opinions. Peter |
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