Originally posted by CrazyNuts I will be honest and say I haven't tested the K-5 YET but a lot of reports on this site indicate not much in the AF department has improved.
Speed hasn't, because it depends on the lens's SDM or the power of the drive shaft (which is the same). The AF system is new though ("SAFOX IX+", same as in the 645D) compared to the K20D's "SAFOX VIII", and consequently, it
is more sensitive and does much better in continuous mode.
When I compared the K5's AF to the Nikon D3x, the Nikon blew it out of the water, but only indoors, where there was little light, or for action shots (its 50+ points sort of helped there). Then again, there's a bit of a price difference there.
Once thing I wish Pentax would improve on is the superimposed AF points in the viewfinder. Canon/Nikon cameras have that technology nailed, it looks like Pentax is still illuminating lights rather than overlaying the screen with an lcd of some sort.
In any case, it's your call. Pentax might be coming out with some surprises this year and next, but we will have to wait and see what they are
Adam
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