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Old 13-09-2019, 09:41 PM
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Peter Ward
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Peter Ward is offline
Join Date: Dec 2007
Location: The Shire
Posts: 6,729
Originally Posted by Astrofriend View Post
The Petzval design, if it's so good, I don't think I see it on camera lenses, why?


Not everyone is interested in taking photos always with an infinity telescopes are designed/optimised to do.

Camera lenses need to work well over a much wider focal range.
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