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03-06-2014, 11:35 PM   #46
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QuoteOriginally posted by starjedi Quote
Yes. But for the same 31mm, the APS-C version can be made smaller or large aperture than FF version.
I would say it can be made smaller, maybe even lower quality material all for the reason to reduce cost and still offer the same rendering and all. In the process you might need to drop the largest apperture. and say limit to f/2 or f/2.4. This is what has been done to DA35 f/2.4 compared to FA35 f/2. This has to sell well as you'll need to compensate for the R&D anyway otherwise the price might not even drop. There no reason to create a 31mm f/2.4 with so many lens arround 31-40mm range. It would bring nothing in term of sale.

Would make more sense to release a 28, 26 or 24mm f/2. maybe even with FF support as DA21 is here for small size/weight needs. 24mm f/1.4 could be interresting but would end up being too expensive and too big too. Doesn't fit well pentax philosophy.

On the oppposite, make it a large aperture require a complete redesign. This would be a totally different lens and there is no reason for it to offer the same performance characteristics as legacy FA31. But this lens is the most mythical lens in current Pentax lineup. I'am not sure this is a bright idea to redesign the thing and take high risk to design a lens that is inferior to actual FA31. Just see how the DA15 HD is viewed as inferior to DA15 SMC due to the missing starbust effect. And this keeping the whole optical design, just improving coating and changing apperture blades.

03-08-2014, 03:04 AM   #47
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QuoteOriginally posted by Nicolas06 Quote
24mm f/1.4 could be interresting but would end up being too expensive and too big too. Doesn't fit well pentax philosophy.
Plus the Sony Zeiss 24/2 is possibly the best 24 out there. 24/1.4 might be nice, but it's unnecessary if it can't be done really well.

---------- Post added 03-08-14 at 02:15 AM ----------

QuoteOriginally posted by starjedi Quote
At the same time, FA135/2 and FA*24/2 will of course be welcomed for FF camera body. But for APS-C lines, 135/2 and 24/2 do not hold their own values (the first is too long for portrait and too short for birds, 24/2 is a little bit of short for landscape).
Ha Ha. It's too bad I don't know any better, and these focal lengths have worked well for me on APS-C (after all, who ever heard of FF 200mm and 35mm lenses?).
03-08-2014, 04:16 AM   #48
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I would be interrested by thoses lenses too!
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