>Zeiss lenses are generally pretty good :-).
Yes, the Zeiss Tessar lenses are almost legendary in their
quality. Zeiss optics can be found on a lot of medical equipment
too. One of my favorite lenses to use with my A-1 is a Kiron
70-210mm macro zoom. It's about 15 years old at this point but it's
barrel movement is smooth as silk. When it was new in the mid 80's,
it cost us nearly $400.
>
>It is, of course monochrome only, but the CCD output is digitised to an 8
>bit signal, which is corrected in the camera (8*8 multiplier chip and an
>EPROM lookup table) for the sensitivity of each CCD pixel. Since it is
>only useable for static subjects (it takes a few seconds for the CCD to
>move across the image), there's nothing to stop me taking 3 pictures,
>each with a suitable colour filter in front of the lens, and then
>combining them in software if I need colour.
That's how the DigiView works on the Amiga, though instead of
the supplied color wheel and a video camera to capture the images I
use a good quality VCR or 8mm camcorder, good quality cables, and a
color splitter. I still have to do the 3 seperate captures though.
Of course, the DigiView doesn't offer anywhere near the resolution
that you're talking about either but for 1985 it was pretty
impressive.
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
Received on Fri Apr 13 2001 - 19:06:26 BST