douglasf13 Offline Upload & Sell: Off
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HopeIsEternal wrote:
No, not postage sized lenses. But fast (f/1.4 - f/2), short lenses in the 12-85mm range that are similar in size to M-mount lenses but with AF and electronic aperture control.
Also it is perfectly fine if these lenses are not sharp across the frame wide open. Users would be able to choose between fast & small lenses (with reduced across frame sharpness) and larger lenses that make less compromises.
I've used old sixties lenses like the Asahi/Pentax Super Takumar & Minolta 50mm f/1.4 and they are small, well built and sharp enough for most of the candid, portrait and general photography I would like to do. I even tested the Takumar against the Sony AF 50mm f/1.4 and the Takumar had better flare control and was just as sharp. I personally would be happy with compact FF CSC lenses that were as affordable, small and sharp as the Takumar 50mm f/1.4. I would be definitely unhappy with the size and price of the Sony 55 f/1.8 FE lens.
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You can't directly compare the size of the Takumar 50/1.4 (one of my fave lenses, btw) to the FE, because the Takumar requires a much longer registration distance. That extra space has to come somewhere, whether it is in the depth of the body, like an SLR, or the depth of the adapter, like for the A7/R. Plus, the Takumar doesn't have AF/aperture motors, and it isn't nearly the performer of the FE 55 from wide open. You do have smaller 50/1.4 lenses that don't require as much registration distance, like the M 50 Summilux, but the Lux appears to have issues on "normal" FF CMOS sensors like in the A7/R. Plus, the Lux is only 10mm shorter than the FE 55, once you add the adapter.
Ultimately, you have to measure the depth of the whole system, not just the lens, to get a real feel of size differences. It would be cool if someone made a new set of collapsible FF prime lenses. That would be one way to get size down.
Organic CMOS will probably be the next tech that could improve sensor edge performance.
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