01-15-2015, 05:07 PM
Quote:Or, alternately, I would buy a 135mm f/2 which was more compact and a lot lighter, as it would be if it was designed for the Fuji X/m43 format.
Well, it cannot be much more compact or lighter.
A 135mm f/2 lens will always have an entrance pupil of nearly
70mm ... this is unavoidable. Therefore it needs a frontlens
with at least this diameter. Even if you simplyfy the rest of
the optical construction (at the price of degraded quality)
the resulting lens will not be much lighter nor smaller.