Question about Quantaray 500mm/1000mm Preset Telephoto Lens
Can you please tell me what preset means, ????
Pre-set depending on the model, can be fixed aperture, and or fixed focal length. You have to read the spec sheet to know, or call the dealer.
I have a fixed 500 mm / F8 mirror lens. It is refered to as a fixed lens, because nothing is adjustable. I have aperture and filter drop-ins to do the equivalent of some adjustments.
Posted on Apr 29, 2008
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Posted on Jan 02, 2017
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