Originally posted by Pål Jensen Nothing to do with fanaticism but being fed up with people reading specs sheets and pixel peep instead of taking images and use them in real life.
The fact of matter is that unless you are a dedicated sports photographer that want AF at 8fps, all AF cameras on the market do the job provided the photographer know how to use it. The latter is sadly lacking as some seem to think that AF is some magic feature where all you need to do is to point the camera at the general direction of the subject and then whatever the photographer want to be in focus will be in focus. AF doesn't work that way. Like metering, AF is basically good enough and it boils down to knowing how it works. After 15 years of whining on various forums of slow AF I haven't seen single example where the culprit has not eventually turned out to be user error (ie used in the wrong way).
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As a current Canon/Pentax user, I have to concur with what you just wrote to some extent.
It seems that AF shear speed is greatly a function of the lens/AF mechanism when used in "single shot" mode.
For example, my FA135f2.8 focused as fast on my K10 than my 70-200f4L on my 5D (and the 135 has a min focusing distance of 0.7m!).
But the 70-200L smokes the DA*50-135 for example so YMMV.
Same could be said about FA35f2 AF speed against EF 35f2... no AF speed difference to be found. Same again when comparing FA 50f1.4 to EF 50f1.4: speed is about the same.
When it comes to tracking moving targets or focus in low light, however, I always reach for the Canon... no contest here.
As for K-7 being "unusable" above ISO 800... people saying that just never print obviously.