Originally posted by deejjjaaaa please stop bringing the whole camera to make the point - we are talking
about AF subsystem... the whole camera is a different animal with price depending
a lot on other things like sensors, sales strategy/profit margins, etc... you can have K20D in "something average" league and still have AF subsystem, at least one central cross-type censor, on par w/ the best... at least that.
PS: going back to PZ-1 focusing - well, at least just stick that "linear/horizontal only" sensor in addition to "cross type" sensor, allow user to select which one to use.
Unfortunately, if you demand the best AF system, things like sensor, other niffty features (e.g. fast fps, ...) would come along in one package as well. People don't just put in the best of something to pair it up with the rest of "something average".
By the way you're saying, you are placing the AF system of the Canon 40D in the same league as the Canon 1D's? They're not, even though they're under the same brand. The manufacturers do scale these AF performance according to the respective price segment.
What i am saying so far is that, if you want to compare the AF system: Pentax vs. Canikon, you should compare to the AF system of the same segment. Pentax fully knows that their AF can't compete with the 1D; thus they price it accordingly.
Let's say Pentax manage to put the 1D equivalent AF system into the K20D, do you think Pentax would sell that camera at the current price point? Or even at the current D300 point? Even if they want to be competitive, they would price at least the same as D300 as they're clearly the superior. Why would you sell yourself cheap when you're the best within that segment?