Originally posted by Pål Jensen You didn't. The article has nothing to do with DOF....
With all respect the article was not really relevant. Sure you can get fantastic images with a P&S or cheap DSLR, but they have limitations. Take your P&S or entry level out of situations that help to level the playing field, lets say an indoor basketball game under artificial lights.
Problems that arise:
Fast paced constantly changing direction subjects in Low light: High ISO is needed to stop motion blur, Flash is not acceptable in most situations as it distracts the player, Fast and Accurate AF is needed to get you the shots as things happen in the blink of an eye.
P&S: you might get some wide angle shots to work (maybe) but any telephoto zoom would be futile.
Cheap APS-C DSLR: Possible to work with but is still limited in what It can do.
Now note what a professional does.
NBA photographer for a day - ESPN
As you will note, he uses a Nikon D3. And wait for it... Auto focus!
Jeremy Martinez
NBA - Denver Nuggets Basketball
EOS 5D
Obviously there will be a few that shoot with APS-C.
My experience with AF in particular given your apparent
bucking of AF, I have used slow AF, Manual Focus, and HSM. The keeper rate started with the HSM lens getting the most (even with a max aperture of F2.8 which was the slowest of the bunch). Manual Focus came in second with a higher % of infocus shots but FAR fewer shots overall as it is not fast enough for this kind of action,ie to see action about to unfold to getting focused was too slow. Finally Slow AF had the lowest success rate even with the fastest aperture of F1.8.
End of the day the photographer will use what works for them and meets their budget constraints, but making statement relating concern about AF being for incompetent amateurs is not a well thought out comment at all.
EDIT: I should also point out, Pro's also factor in getting equipment that makes their job easier. AF is one of those things
My personal opinion of how the pentax lineup should go is scrapping mirrorless and focusing on typical pentax values. A camera in the Mid level and Pro/advance enthusiast APS-C in conjunction with a mid range FF would be where I would focus my efforts.
The full frame is an "if" statement though. For me it would need:
Weather seals
Improved AF (I have used canon and it's very nice comparatively speaking)
A new flash system to compliment it.
Smaller body than your 5DIII and D800, but slightly larger than K-5
Non-EVF
5fps RAW minimum with a large buffer.
18-30MP
Dual processors
Re-release of FA lenses the FA* with Revised SDM
And get some bloomin'
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