Quote:
Originally Posted by billdan
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Quattro - F3.5 to F6 - 70mm dist to chip - no change to Focal Length
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That's interesting...what's your source? I have the GPU corrector and TS claim distances in the 50s mm
https://www.teleskop-express.de/shop...4-element.html
(incidentally, my test images with a Quattro are miserable at ~55mm)