why not having a larger aperture on the 12-40 f/2.8 ??

Started Jan 10, 2017 | Discussions thread
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fredos Forum Member • Posts: 55
why not having a larger aperture on the 12-40 f/2.8 ??


I had an idea and i need you to tell me why i am wrong.

The olympus 12-40 f2.8 is amazingly sharp at f2.8 (at least on the wide end). It could probably still be very sharp at a larger aperture. Since the diaphragm can open up to 40mm/2.8 = 14mm, if it would get opened the same way at 12mm, it would be an aperture on f/.85 (or f/1.4 at 20mm).

Indeed f/0.85 would obviously show hugly results, but I'm sure f/2 would be more than enough (maybe some chromatic aberations  but it's easy to correct in post).

Now my question, wouldn't it be possible to hack the lens in some way to increase the maximum aperture ?

Another question, why doesn't olympus produce a version with larger maximum aperture at the wide end ? To still sell primes or does the constant max aperture matter so much on the pro lenses for them ?

Thanks !


 fredos's gear list:fredos's gear list
Olympus OM-D E-M10 II Panasonic Lumix G 20mm F1.7 ASPH Olympus M.Zuiko Digital 45mm F1.8 Panasonic Lumix G X Vario PZ 14-42mm F3.5-5.6 ASPH OIS Samyang 7.5mm F3.5 UMC Fisheye MFT +1 more
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