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Old 13-09-2019, 07:46 PM
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Astrofriend (Lars)
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Astrofriend is offline
Join Date: Aug 2017
Location: Stockholm, Sweden
Posts: 231
The Redcat is very fine, but I think the Canon lens works better for me with its builtin focus motor. The aperture is 70 mm on Canon 300mm f/4 and 51 mm of the Redcat. But the quailty is better I understand, maybe something for the future.

The Petzval design, if it's so good, I don't think I see it on camera lenses, why?

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