Originally posted by Wheatfield If you go out and use two different cameras, and one just seems to have snappier performance, then you've a qualified comparison that one camera is faster than the other. I have more interest in this sort of anecdotal approach than a purely quantifed approach that may or may not have anything to do with actual photography.
For example, a friend and I were out shooting, him with his D300, me with my K20. At the end of the day, we didn't need to quantify that his D300 ran rings around my K20, it was obvious to both of us that the D300 was significantly more responsive.
Well, as K20's go, well, we kind of talked about this as regarded the question of if the new ostensibly-just SR-related algorithms speeded up the AF, (I still think so, even if it's just cause the new SR freed up computer space for the trickier conditions I tend to like) I'm not gonna dispute a d300 is faster, (Particularly since I've never had more than a half a minute of sharing-time in a friendly fashion with some Nikonian who'd never apparently seen an F-1 with a 1.2 lens on there. ) There was like a big Tammie on there, I was like, 'Yep, it focuses.'
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I don't doubt people saying it's faster than a K20d: I definitely don't see the difference being a deal-killer, particularly since I got my K20d for a full grand less and I sure *wouldn't* have gotten a brand new 50 1.4 that'd AF at *all* without still *further* expense if I were near that league. Only people with much of a leg to complain on are richer than I, anyway.
AF's still a crutch to me, anyway: given a bigger finder for digital, I'd probably still be doing MF most times. Doesn't matter how fast the AF is, in a way: telling it what to do isn't always faster than just doing it myself. (Though it often is: eyes and reflexes aren't getting any younger.)
Just for S&G I tried shooting at some oncoming stuff out of a moving car with my K20d, when the tracking thing came up, trusting to AF-C.
Seemed to work fine. I dunno. Sometimes I think too much is made of all this. But, then, I've only got the one FA lens, for AF not counting the kit.
Oh, but, salient point being, I don't know if you can pre-bash the K-7 based on holding one that may or may not have even been a release model, in a shop.