Originally posted by netrex A 24MP sensor would be horrible for APS-C. I really don't want that, unless it's a leap of many generations in technology so ISO performance and dynamic range isn't worsened :P
I could take the K-5 with 10 MP and have the same amount of data going through it (about 11 FPS) and better ISO performance and dynamic range (though the dynamic range of ISO 80 is very good now, and ISO performance of course :P
Actually, the sample images from the Sony NEX 7, which uses a 24MP APS-C sensor, are anything but horrible. They do show more pixel level noise than the K-5 at ISO 1600 and above, but there would probably not be a noticeable difference with comparably sized images or with downsampling of the 24MP to 16MP. Dynamic range of the 24MP sensor has yet to be determined, as far as I know. At the lower end of the ISO scale, images are clean, and detail is stupendous.
That said, I think that 24MP is overkill for the kind of photography that I do and the size of prints that I make. Furthermore, I would not look forward to dealing with the larger file size that would come from the higher resolution sensor, and I might be forced to upgrade my computer in order to process them at a reasonable speed. If the K-5 successor does, in fact, utilize the 24MP sensor, I will wait to see how well Pentax implements it before making up my mind. I do not rule it out, but I think that I would prefer an updated version of the 16MP sensor from the K-5. That is what Fuji has chosen for their X-Pro 1, for which they make the as yet unproven claim that it equals or outperforms FF.
Rob