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Lenses Discussion of Lenses

Nikon 1000mm f11 reflex - any good?

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  #11  
Old 11-02-09, 14:50
Rudra Sen Rudra Sen is offline  
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058 is a solid investment Andy. Mine is working fine for years now. What price they're asking for?
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  #12  
Old 11-02-09, 15:03
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andy153 andy153 is offline  
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Its old stock so 180 Rudra.
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  #13  
Old 03-05-10, 10:48
sigmasd14 sigmasd14 is offline  
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I'm not keen on mirror lenses at all but I do have one that I think is worth considering instead of the Nikon 1000mm f11...The Russian MTO 1000A 1100mm f10.5...It offers a 100mm FL advantage yet its a wisker faster than the Nikon and its bound to be a lot cheaper too.
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  #14  
Old 14-11-18, 18:10
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BrittanyLogan BrittanyLogan is offline  
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As a result, a lens with a focal length of 1000mm has a physical size of about 30 cm in length. This complicates the process.
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  #15  
Old 26-12-18, 20:49
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You only have to move the focus ring a fraction of a degree to change the focus by many feet!
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  #16  
Old 27-12-18, 13:45
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Quote:
Originally Posted by BrittanyLogan View Post
You only have to move the focus ring a fraction of a degree to change the focus by many feet!
Although the thread is nearly ten years old, I think it only fair to point out this is actually the case for all lenses at the more distant end of the focus scale. Adjusting focus from distant stars to the moon (more miles than you can comprehend) hardly needs any focus adjustment at all In my experience the degree of focus movement with a mirror lens is not that different to a refractor of similar focal length. The design of the thread on the focusing helicoid being chosen to make it match the focal length. There is a range of focus sensitivities, some lenses giving more focus movement than others AF lenses tend to have less movement for a given change in focus, as precision in manual focusing is not so much of an issue.
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