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Flange Focal Distance
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PostPosted: Fri Apr 21, 2017 2:55 pm    Post subject: Flange Focal Distance Reply with quote

For fans of adapters, here is a good write up about flange focal distance:

http://briansmith.com/flange-focal-distance-guide/

I found this while attempting to ascertain whether or not T-mount and YS mount flange focal distances are the same (note:
they are the same, both 55mm).


PostPosted: Fri Apr 21, 2017 6:22 pm    Post subject: Reply with quote

I like the explanation that subtraction results negative means lens can't mount inside body. I hadn't heard it explained that way before. Much easier to understand the principle than my "sort the list by flange distance; find lens camera; lens will mount on cameras with greater flange distance."

imho this page is even better: https://en.wikipedia.org/wiki/Flange_focal_distance


Last edited by visualopsins on Fri Apr 21, 2017 7:56 pm; edited 1 time in total


PostPosted: Fri Apr 21, 2017 6:30 pm    Post subject: Reply with quote

ys interchangeable auto mount booklet: http://forum.mflenses.com/spiratone-ys-interchangeable-auto-mount-booklet-t32619.html


PostPosted: Fri Apr 21, 2017 11:04 pm    Post subject: Reply with quote

visualopsins wrote:
ys interchangeable auto mount booklet: http://forum.mflenses.com/spiratone-ys-interchangeable-auto-mount-booklet-t32619.html


Hey, thanks! That's a really good YS reference which I had not seen prior, probably because it was posted years ago and I missed it.

If you have time, please consider adding that booklet to our library here on this forum. I would so so myself, but it is your find and you deserve the credit.

Thank you!