Simple physics. 40mm is about the shortest lens that will clear the mirror box. Anything shorter than that needs to be a retrofocus design, and thus much larger.

--

Frantisek wrote:
I just don't get what the idiots were thinking... 40mm pancake for
1.5x crop digital?!? 60mm pancake? Nice, but the thing that was
missing was 40mm EQUIVALENT pancake... THAT would be nice.

OTOH, Tessar formula can be made to be the best lens, if utilised with
the right glasses... look at Leica Elmarit and Cosina Heliar (both of
which are similar to Tessar design), Nikkor 40/2.8, and some old
process Apo-Tessars. All of these are among the best lenses ever.

I still don't understand why they didn't make it like 26mm/2.6 or
such... equivalent of the classical 40mm pancake. As it is, it's just
a one-off item to collectors, not for users...Not that useful for
portraits (as it will have DOF of a 40mm lens, not the 60mm
equivalent).

fra



-- graywolf http://graywolfphoto.com/graywolf.html




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