Quote:
Originally Posted by avandonk
If you want the best lens ever built with a focal length of 200mm then the non IS Canon 200mm F1.8L is the lens to go for. It is no longer made and fetches a premium price in good nick. There is a setup with four or six? of these with astro detectors on a fork mount to do simultaneous overlapping fields to give really wide field surveys by professional astronomers. I will see if I can dig up the site.
Bert
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Sounds hot Bert.
Would that cover a 16803 chip though with 85mm backfocus? 16803 is 44mm square with a 52mm diagonal. It needs the backfocus to allow a
filterwheel and the focuser. Of course it would fit a 5D Mk11.
I'll check it out.
Greg.