How fast is K-x in terms of AF speed?

Taikonaut · 11-16-2009, 12:20 PM

Are there any tests on this topic? It looks like K7 is really decent. Thanks.

RaduA · 11-17-2009, 04:23 AM

Originally posted by Taikonaut

Are there any tests on this topic? It looks like K7 is really decent. Thanks.

This may help you with some solid numbers: Pentax K-x Performance, Timings, and Image Quality

Radu

artemapei · 11-18-2009, 04:42 AM

as to my friend's (k7 user) opinion only k7 has remarcable progress in af speed as it has next generation (8+) of af. k-x has the same af (8) as previous models.

wlachan · 11-18-2009, 04:56 AM

Not sure about the K-x/K-7, which are said to be similar to the K-m. My impression is that my K-m is faster and more certain than the snail speed Ds, but still a little behind the Z-1p in pure torque and speed. None of them match my 40D with USM for moving target, not even close.

frank · 11-18-2009, 05:00 AM

From my own experience, Kx focuses slightly faster than the K7 w/ FA31 mounted on both cameras under room light. Kx is more decisive than K7 w/ FA31. I didn't get chance to test other lens under other light condition though.

rawr · 11-18-2009, 05:28 AM

AF in the K-x is perceptibly faster than my K200D using the same lenses. Faster and more 'confident' too, especially in lower light.

sbbtim · 11-18-2009, 08:48 AM

What about the accuracy? Thanks.

Originally posted by frank

From my own experience, Kx focuses slightly faster than the K7 w/ FA31 mounted on both cameras under room light. Kx is more decisive than K7 w/ FA31. I didn't get chance to test other lens under other light condition though.

11-16-2009, 12:20 PM	#1
Taikonaut Forum Member Join Date: Apr 2009 Location: New York Posts: 62	How fast is K-x in terms of AF speed? Are there any tests on this topic? It looks like K7 is really decent. Thanks.

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11-17-2009, 04:23 AM	#2
RaduA Guest	Originally posted by Taikonaut Are there any tests on this topic? It looks like K7 is really decent. Thanks. This may help you with some solid numbers: Pentax K-x Performance, Timings, and Image Quality Radu

11-18-2009, 04:42 AM	#3
artemapei Forum Member Join Date: Nov 2009 Location: Moscow-Guangzhou Posts: 71	as to my friend's (k7 user) opinion only k7 has remarcable progress in af speed as it has next generation (8+) of af. k-x has the same af (8) as previous models.

11-18-2009, 04:56 AM	#4
wlachan Veteran Member Join Date: Sep 2006 Location: Canada Photos: Albums Posts: 2,625	Not sure about the K-x/K-7, which are said to be similar to the K-m. My impression is that my K-m is faster and more certain than the snail speed Ds, but still a little behind the Z-1p in pure torque and speed. None of them match my 40D with USM for moving target, not even close.

11-18-2009, 05:00 AM	#5
frank Veteran Member Join Date: Nov 2006 Location: Singapore Photos: Gallery Posts: 3,202	From my own experience, Kx focuses slightly faster than the K7 w/ FA31 mounted on both cameras under room light. Kx is more decisive than K7 w/ FA31. I didn't get chance to test other lens under other light condition though.

11-18-2009, 05:28 AM	#6
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	AF in the K-x is perceptibly faster than my K200D using the same lenses. Faster and more 'confident' too, especially in lower light.

11-18-2009, 08:48 AM	#7
sbbtim Senior Member Join Date: Oct 2009 Photos: Albums Posts: 125	What about the accuracy? Thanks. Originally posted by frank From my own experience, Kx focuses slightly faster than the K7 w/ FA31 mounted on both cameras under room light. Kx is more decisive than K7 w/ FA31. I didn't get chance to test other lens under other light condition though.

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