Why do Pentax lag with autofocus?
Edit: The 18-135mm is also pretty nippy ... again a non SDM lens
I always use centre spot AF and set a User mode up for action shots.
Some KAF mount equipped Sigma lenses are not equipped with HSM, .. question of technical compatibility (alas !..)
Dave
I've got the K-5 IIs just for 10 days. I took about 150 pics in the meantime by any daylight condition. Before that my best camera was K-x. So far I'm not really impressed by the improvement of AF speed and precision promised with K5 II. I wonder whether is there any significative one.
Tracked my son without issue - followed a few birds as well for the hell off it and again focus locked no problem
Having been paid to shoot a fair few sports events I would have no hesitation whatsoever recommending the K5 for rugby (which I shot),, football, tennis (which I shot), hockey, X games (which I shot), motor racing, moto-cross etc. etc. In my first year I used 2 x K5 with the Sigma 50-150 and DA*300 and they performed very well indeed, the failure to lock focus was relatively far and few between, I'd say a 90%+ success rate.
Last year I also used the Nikon D800, Sigma 500 and Nikon 80-200 in addition to the K5 kit. There is a distinct advantage in AF speed with the Nikon, even when used with the 500 (the 80-200 is lightening fast). I would often be shooting with the 500 and put it down to pick up the 50-150 (which with HSM is a little faster than most Pentax lenses) as the players came close to my pitch-side position and the speed difference is noticeable, but that said the K5 didn't fail me and no make/combination has a 100% success rate.
So yes, the Nikon AF is faster (and their 300 primes, whether f2.8 or the f4, are all very fast focusing lenses) and there are/will be instances where it will get the shot and the K5 would miss, but they are usually specific circumstances and the K5 will get 90% of the shots the D800 would. Of course that 10% is part of the reason I added a Nikon kit - birds are tough when they suddenly take flight from the bushes !
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
got a Nikon D800....ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ!
CZ Lenses ......ZZZZZZZZZZZZZZZZZZZZZZZZZZ!
Why don't you go off and buy a NEW CONTINENT!
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Pentax K-1 + K-5 and some other stuff
Algi
I wish you'd stop telling us that you've
got a Nikon D800....ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ!
CZ Lenses ......ZZZZZZZZZZZZZZZZZZZZZZZZZZ!
Why don't you go off and buy a NEW CONTINENT!
-
Hahahaha I'll have that one there please
I wish you'd stop telling us that you've
got a Nikon D800....ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ!
CZ Lenses ......ZZZZZZZZZZZZZZZZZZZZZZZZZZ!
Why don't you go off and buy a NEW CONTINENT!
-
I thought it was a quite useful post, and a very positive assessment of the K-5's AF capabilities. I think a comparison to a professional FF camera with a reputation for excellent AF speed gives a good measure of where the K-5 stands. And considering its price and other positives, it gave me a feeling that it's a great choice for everything except perhaps birds - but that we knew already.....
I wish you'd stop telling us that you've
got a Nikon D800....ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ!
CZ Lenses ......ZZZZZZZZZZZZZZZZZZZZZZZZZZ!
Why don't you go off and buy a NEW CONTINENT!
-
Everyone on here knows my opinion of you and your integrity so your views on anything have zero interest to me.
When is the last time you actually posted a shot you've taken on PU BTW ?
Do me a favour, if you see one of posts skip past it and you'll save us both making posts we'll regret.
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
Many thanks in anticipation of an end to hostilities.
I thought it was a quite useful post, and a very positive assessment of the K-5's AF capabilities. I think a comparison to a professional FF camera with a reputation for excellent AF speed gives a good measure of where the K-5 stands. And considering its price and other positives, it gave me a feeling that it's a great choice for everything except perhaps birds - but that we knew already.....
Thanks Giofi. I'm not trying to blow any horn but in this instance at least I thought it was what the OP was looking for, a valid comparison.
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
Thanks, Dave
Although I do agree, Pentax do lag behind when it comes to focus tracking. For me it's the only area where Pentax are behind the competition
Michael
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1204 posts
14 years
Laindon,Essex
Dave