Quo Vadis Nex?

Started May 16, 2011 | Discussions thread
blue_skies Forum Pro • Posts: 11,530
Re: Quo Vadis Nex?

jazzroy1972 wrote:

And what about some rangefinder pancake lenses as the Industar 50 3.5 ?

The M39 adapter is less than 1cm and the lens around 3cm, so we are in a real pancake situation with a 50mm.

So, it's possible.

Maybe, but the flange to sensor distance on the Leica is 29mm

( http://en.wikipedia.org/wiki/Lens_mount ) versus 18mm on the Nex. This means that the adapter is 11mm to correct for the delta, and the lens extends another 3cm. On the Nex, the protrusion then becomes 41mm for a 50mm lens, and it honors the full focal length distance (sensor to end of lens is 58mm).

At 41mm protrusion, it protrudes more than twice as far as the 16F28 pancake, and extends further than e.g. the fujinon 35mm lens.

Again, here is the NEX with the CV Nokton 35mm - this is close to the 1855 size, NOT the pancake size. The Industar will extend similarly, not truly 'pancake like', imho.

here's some comparisons against MFT, with 17mm flange registration and 2x crop:


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