Pentax KP performance results posted on imaging-resource.com

apete · 03-17-2017, 04:10 PM

Some interesting data is here:
Pentax KP Review: First Shots - Performance

I am not familiar with their testing methodology but that looks promising:

The Pentax KP's full autofocus shutter lag when shooting the same target multiple times was much faster than average for a prosumer DSLR when using the optical viewfinder.

They are also having interesting conclusion:

Bottom line, the Pentax KP's performance was mixed for its class, ranging from very fast for autofocus speeds, cycle times, burst speeds and flash recycling to slow startup time, shallow RAW buffer depths and sluggish buffer clearing times.

Last edited by apete; 03-17-2017 at 04:17 PM.

rawr · 03-17-2017, 10:05 PM

All AF timing measured with a Pentax 35mm f/2.8 lens
Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses.

howieb101 · 03-18-2017, 03:07 AM

Well, if it is the 35mm Limited Macro then we can expect a lot faster performances. Testing AF speed with a macro lens is actually rather strange then again, a 35mm macro is unusual as well!

gm4life · 03-18-2017, 03:32 PM - **1 Like**

Originally posted by rawr

All AF timing measured with a Pentax 35mm f/2.8 lens
Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses.

Nothing scientific but my KP and 20-40 are VERY quick!

**mikesbike** · 03-18-2017, 04:22 PM - **1 Like**

This is just a preliminary hands-on review. That said, it does show some good AF efficiency form the KP, especially if a macro lens was used. There will be a much more detailed test review forthcoming, including lab test shots and extensive field use. If a camera model is sold with a standard kit lens, they usually take that for field shots. Since the KP is not sold with a standard kit lens as far as I know, it should be interesting to see what lens or lenses will be used.

ogl · 03-21-2017, 01:56 AM

Originally posted by rawr

All AF timing measured with a Pentax 35mm f/2.8 lens
Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses.

Pentax screwdrive is usually faster than DC and SDM. I don't think that they use DA35 in macro mode.

Kunzite · 03-21-2017, 10:38 AM

Originally posted by rawr

All AF timing measured with a Pentax 35mm f/2.8 lens
Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses.

"To minimize the effect of different lens' focusing speed, we test AF-active shutter lag with the lens already set to the correct focal distance."
So they're not actually measuring AF speed but lag.

gm4life · 03-22-2017, 08:50 PM

Originally posted by mikesbike

This is just a preliminary hands-on review. That said, it does show some good AF efficiency form the KP, especially if a macro lens was used. There will be a much more detailed test review forthcoming, including lab test shots and extensive field use. If a camera model is sold with a standard kit lens, they usually take that for field shots. Since the KP is not sold with a standard kit lens as far as I know, it should be interesting to see what lens or lenses will be used.

True, I am curious to see what they use to test for a lens too. Hopefully the 20-40 Limited or 16-85.

03-17-2017, 04:10 PM	#1
apete Senior Member Join Date: May 2014 Posts: 249	Pentax KP performance results posted on imaging-resource.com Some interesting data is here: Pentax KP Review: First Shots - Performance I am not familiar with their testing methodology but that looks promising: The Pentax KP's full autofocus shutter lag when shooting the same target multiple times was much faster than average for a prosumer DSLR when using the optical viewfinder. They are also having interesting conclusion: Bottom line, the Pentax KP's performance was mixed for its class, ranging from very fast for autofocus speeds, cycle times, burst speeds and flash recycling to slow startup time, shallow RAW buffer depths and sluggish buffer clearing times. Last edited by apete; 03-17-2017 at 04:17 PM.

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03-17-2017, 10:05 PM	#2
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	All AF timing measured with a Pentax 35mm f/2.8 lens Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses.

03-18-2017, 03:07 AM	#3
howieb101 Veteran Member Join Date: Nov 2008 Location: Melbourne, Australia Photos: Gallery \| Albums Posts: 594	Well, if it is the 35mm Limited Macro then we can expect a lot faster performances. Testing AF speed with a macro lens is actually rather strange then again, a 35mm macro is unusual as well!

03-18-2017, 03:32 PM - 1 Like	#4
gm4life Veteran Member Join Date: Dec 2016 Posts: 602	Originally posted by rawr All AF timing measured with a Pentax 35mm f/2.8 lens Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses. Nothing scientific but my KP and 20-40 are VERY quick!

03-18-2017, 04:22 PM - 1 Like	#5
mikesbike Site Supporter Join Date: Dec 2016 Location: Southeastern Michigan Posts: 4,549	This is just a preliminary hands-on review. That said, it does show some good AF efficiency form the KP, especially if a macro lens was used. There will be a much more detailed test review forthcoming, including lab test shots and extensive field use. If a camera model is sold with a standard kit lens, they usually take that for field shots. Since the KP is not sold with a standard kit lens as far as I know, it should be interesting to see what lens or lenses will be used.

03-21-2017, 01:56 AM	#6
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by rawr All AF timing measured with a Pentax 35mm f/2.8 lens Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses. Pentax screwdrive is usually faster than DC and SDM. I don't think that they use DA35 in macro mode.

03-21-2017, 10:38 AM	#7
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by rawr All AF timing measured with a Pentax 35mm f/2.8 lens Probably the DA Limited 35 f2.8 - a great lens, but screw drive AND a macro lens with long throw. Still does pretty fast AF, but IR could probably get faster AF results with some other Pentax lenses. "To minimize the effect of different lens' focusing speed, we test AF-active shutter lag with the lens already set to the correct focal distance." So they're not actually measuring AF speed but lag.

03-22-2017, 08:50 PM	#8
gm4life Veteran Member Join Date: Dec 2016 Posts: 602	Originally posted by mikesbike This is just a preliminary hands-on review. That said, it does show some good AF efficiency form the KP, especially if a macro lens was used. There will be a much more detailed test review forthcoming, including lab test shots and extensive field use. If a camera model is sold with a standard kit lens, they usually take that for field shots. Since the KP is not sold with a standard kit lens as far as I know, it should be interesting to see what lens or lenses will be used. True, I am curious to see what they use to test for a lens too. Hopefully the 20-40 Limited or 16-85.

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