Originally posted by Sagi I am aware of the average to below average results (in some fields) Sigma cameras with Foveon X3 are providing but wouldn't it be possible Pentax (or Ricoh) engineers would be capable of making a great processing unit with some great results from Foveon sensor? So, is Sony sensor - whichever it might be, the APS-C or FF, really the only option for Pentax? And there are rumors Foveon might introduce the FF sensor this year.
Sigma's ownership of Foveon isn't as brilliant. How strongly they're pushing Foveon tech forward? It is a very niche product. Thus far, that sensor is almost unusable above ISO 400. I believe both Canon and Sony, who are working on their own implementation of a 3-layered pixel gathering sensor will come out with a better solution in not so distant future.
Quote: And one more hypothetical question - how can we be sure Pentax will make another segment leading camera regarding IQ - be it APS-C or FF. As the K-5 was an exceptional case and now, after almost three years on the market, many newer models from Nikon or Canon provide better results. So, maybe we just shouldn't take exceptional IQ from Pentax as granted ... It wasn't like this till K-5 came.
Let's examine what cameras — FF cameras with latest FF sensors from Sony, yes. Nikon D800, RX1, etc. They sport brilliant new FF CMOS sensors.
APS-C cameras? K5 is still there in the very top. 24MP in Nikon D7100 offers more pixels yes, which can be perceived as "better" by some, but the sensor tech itself is on the same level.
Another interesting point: compare D800 with 645D. Apart from high ISO performance of the CMOS FF in Nikon, CCD KAF used in 645D in combination with 645D MF glass is actually a better image maker. Really better — the colour, the tone, resolving detail, control of DOF, etc. MF is a league of its own.
I suggest you not to write off Pentax as a serious image quality oriented company. I'm more than 99% certain that:
• the 645DMk2 will sport at least a 60MP sensor which still won't out-resolve those amazing MF lenses (which
isn't the case with FF),
• there will be new APS-C bodies with 20+ MPs,
• and an FF (or two) with same or newer sensors from Sony.