Voigtlander 21mm M-Mount Internally Focusing?

Started 2 months ago | Discussions thread
briantilley Veteran Member • Posts: 4,726
Re: Voigtlander 21mm M-Mount Internally Focusing?

Leolab wrote:

I have the LTM 21mm f4 and the new M mount 21mm 3.5.

On both lenses the barrel extends/retracts as i rack focus, so neither are internal focus.

Bear in mind that for wides and ultra wides, the barrel movement is very small to go from near focus to infinity, in the case of these two lenses, its about 2 mm of barrel extension between close focus and infinity.

I would expect the new 21mm 1.4 to be the same (not internal focus, but minimal barrel extension between infinity and close focus)

Thank you for the additional data point.

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