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12-18-2009, 12:22 PM   #16
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I've never used neither the Kx nor the K7. Anyway thoses products are very different in terms of ergonomics, quality and price. As far as high iso is concerned there is probably no difference if you shoot in raw file (cf. dpreview review of D300s which shares its sensor with Kx) and a great difference if you shoot in jpeg, jpeg conversion engine being far better on the Kx than on the K7.
So if you have the money, you are looking for a semi-pro dslr and you usually shoot in raw take the k7. If not take the Kx

12-18-2009, 12:22 PM   #17
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Actually, the K-x does let you select focus points, should you be in the minority of photographers who use that as opposed to center focus of auto select modes. it' true that changing ISO takes two button presses as opposed to a single turn of the dial, although I think perhaps you overstate just how important of a difference that is. still, I agree, if you've become accustomed to the UI of the K10D, the K-x is clearly a step backwards.
12-18-2009, 01:01 PM   #18
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QuoteOriginally posted by p30k100D Quote
As far as high iso is concerned there is probably no difference if you shoot in raw file (cf. dpreview review of D300s which shares its sensor with Kx) and a great difference if you shoot in jpeg, jpeg conversion engine being far better on the Kx than on the K7.
I took some sample shots in raw using both K-7 and K-x, using same exposure and noise reduction settings (i.e. medium setting over ISO800). I then produced JPGs using the same Pentax software and then I examined these at 100%. I did this for 200, 800, 1600 and 3200. At 200, I can't see any difference, but at 800 I can already see better noise performance for the K-x specifically in out of focus areas. At 1600 and especially at 3200 these differences become visible even when not examining the images at 100%.

That being said, while the K-x has less noise, it still has noise and I still find it preferable to not shoot it beyond ISO800, while I try to keep the K-7 under ISO400.
12-18-2009, 01:05 PM   #19
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QuoteOriginally posted by Marc Sabatella Quote
Actually, the K-x does let you select focus points, should you be in the minority of photographers who use that as opposed to center focus of auto select modes. it' true that changing ISO takes two button presses as opposed to a single turn of the dial, although I think perhaps you overstate just how important of a difference that is. still, I agree, if you've become accustomed to the UI of the K10D, the K-x is clearly a step backwards.
Oh you can select your point, you just can't see it.

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