crop factor on T-mount lenses?

WhiteOpus

• Jul 8, 2014

• #2

This is the lens i'm looking at currently. It's mostly out of curiosity that I want to buy it, that focal length crazy! Is there any reason that these t-mount lenses sell for so cheap, other than the fact that they are from the 70s and 80s?

 

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Will Vincent

• Jul 9, 2014

• #3

They're cheap, well... specifically the one you linked to, because it's a slow lens with mediocre optics.

As a comparison, the f5.6 Nikon Nikkor 400mm telephoto I have lets through twice the light of that f8, and even at 5.6 it's tough to use unless I'm outside on a sunny day...
This looks like the one I have.. http://www.ebay.com/itm/Nikon-Nikkor-AI-S-400mm-F5-6-ED-Lens-400-5-6-AIS-596-/400712682734

 

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WhiteOpus

• Jul 9, 2014

• #4

yeah...it's obvious that a lens priced $500 more is going to be better. This would be more of a toy than an actual kit lens, just something fun to play around with like a Lensbaby (which I also want to try out). Any info on the crop factor? Anyone?

Like I said I know these lenses are generally low quality optics and build...doesn't bother me because it's for novelty shooting anyway.

 

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W

wheatgrinder

• Jul 11, 2014

• #5

Crop factor of 1x (in otherwords none) it seems to me that if mounted on a full frame camera there should be no croping.

 

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