Originally posted by panoguy Uh, sorry to be blunt, axl, but since you're looking for justification to your (quite apparent) decision to move to Nikon for better AF, here you go; Nikon has better AF than Pentax.
On the other hand, Simon's photos above show what a good photographer can do with a high quality camera, regardless of brand or technical differences.
Simon, that shot of your boy under the trees with the sunbeams is a smasher! (Even better that he's carrying your tripod for you?)
Oh really now...
The thing I'm looking for is opinion of people who have used both, Pentax and other system.
Only those people can give me honest opinion. Not those who stick to a chosen brand and bash everyone/everything that looks the other way, be it for better or worse.
Frankly I'm torn with Pentax. I love their lenses and that is why I haven't switched to other brands some time ago, but haven't been too lucky with the bodies. K100D was nice but painfully slow. Out of my 3 K10Ds, first developed fault on the sensor (line of stuck red pixels running through half of the frame) after some 30k exposures. 2nd became victim of deteriorating focus (some 35k exposures), where with all my lenses I had be readjusting in debug on monthly bases for more and more back focus (my 43ltd went from -60 to -210um within 4 months!!!) and I traded my K10GP when I begun to suspect the same issue as with my 2nd body (after some 25k exposures).
K-7 is fine body but I was never too happy with it. The AA filter is too strong and the loss of fine detail and fine sharpness compared to K10D is apparent and it's touch smaller than I'd like. On the plus side it improved on K10D in AF department and ISO too.
I'm not doubting Simon's skills as a photographer, and if by your highlighting "
a good photographer" you are trying to imply I'm not in that group then so be it, you are entitled to your opinion. All the posted pictures are top notch, no doubt, but:
a) none is a scenario I'm really concerned about with exception of the swing shot which most probably wouldn't happen with K-7, and the tripod carrying boy, which would definitely fool K10D and K-7 would have issues with it too
b) Simon said it himself, he never used CaNikon, as such he can show me what is doable with K-5 he still can't answer the question whether other brand would make it easier or not...
Now I feel that I would like to get a new body as K-7 is being pushed, winter UK light is in galaxy far
FAR away from Australian sunlit day, and being indoors doesn't help all that much. All shots Simon has posted are in daylight (with exception of one which is in shade) and shot from couple to few meters. F.e. shooting DA*55 at f1.4 at 4m gives you nearly a foot (29cm) of DOF! In the scenarios I'm concerned about, I'm in the room with my son, on the carpet maybe 1.5m away from him and DOF with the same lens and the same aperture is only 4cm, and that's quite a difference. And the AF accuracy/speed matters there because if he moves just an inch, it means he moved the point where I focused to near of far limit of DOF and therefore offset the focusing. Examples?
ISO1600 f1.4 1/40s
his ears are in focus but his eyes are not. His mouth (the point of focus) provides enough contrast or AF to lock on and keep the eyes within the DOF, yet the AF didn't manage
This leaves me in the position where I have to decide whether K-5 can solve the issues I have, or I should look elsewhere. I haven't decided on anything, despite looking into Nikon system before and hearing from people like deadwolfbones and dgaies who have both systems, makes me think the Nikon AF is indeed superior to Safox of Pentax, but what I'm trying to find out here is whether improvements incorporated in K-5 are good enough to solve my problems and saving me from having to switch....