lenses for the kp model

gary g. · 02-15-2017, 11:07 PM

Can't find anything about using the smc PENTAX-DA 18-270mmF3.5-6.3ED SDM, well specifically this lens being compatible with the auto-focus on the kp - best I can see it functions only in the manual focus mode when attached . . .

Racer X 69 · 02-15-2017, 11:27 PM

Hello Gary, welcome to Pentax Forums.

There is info on the lens here: SMC Pentax-DA 18-270mm F3.5-6.3 ED SDM Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database

It does mention the lack of autofocus compatibility with earlier Pentax bodies (*istD series, K100D and K110D), but nothing about newer ones.

Adam · 02-16-2017, 01:59 AM

Originally posted by gary g.

Can't find anything about using the smc PENTAX-DA 18-270mmF3.5-6.3ED SDM, well specifically this lens being compatible with the auto-focus on the kp - best I can see it functions only in the manual focus mode when attached . . .

As a rule of thumb, newer Pentax bodies fully support the AF and exposure systems of older lenses. So, the 18-270mm will work just fine.

Since it's a SDM lens, you won't be able to activate continuous video autofocus, but that feature doesn't work particularly well anyway. You can still use on-demand video autofocus, however. All AF modes for stills through the viewfinder and live view are of course supported.

I would personally recommend the 18-135mm DC + 55-300mm PLM over the 18-270mm lens, as you'll get better image quality and much faster AF. (plus weather sealing)

penG · 02-20-2017, 07:23 PM

Originally posted by Adam

As a rule of thumb, newer Pentax bodies fully support the AF and exposure systems of older lenses. So, the 18-270mm will work just fine.

Since it's a SDM lens, you won't be able to activate continuous video autofocus, but that feature doesn't work particularly well anyway. You can still use on-demand video autofocus, however. All AF modes for stills through the viewfinder and live view are of course supported.

I would personally recommend the 18-135mm DC + 55-300mm PLM over the 18-270mm lens, as you'll get better image quality and much faster AF. (plus weather sealing)

Thanks Adam, good to know.

penG · 02-20-2017, 07:25 PM

Originally posted by Racer X 69

Hello Gary, welcome to Pentax Forums.

There is info on the lens here: SMC Pentax-DA 18-270mm F3.5-6.3 ED SDM Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database

It does mention the lack of autofocus compatibility with earlier Pentax bodies (*istD series, K100D and K110D), but nothing about newer ones.

Thanks for the info Racer.

Racer X 69 · 02-20-2017, 09:28 PM

Originally posted by penG

Thanks for the info Racer.

You're welcome!

02-15-2017, 11:07 PM	#1
gary g. Guest	lenses for the kp model Can't find anything about using the smc PENTAX-DA 18-270mmF3.5-6.3ED SDM, well specifically this lens being compatible with the auto-focus on the kp - best I can see it functions only in the manual focus mode when attached . . .

02-16-2017, 01:59 AM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	Originally posted by gary g. Can't find anything about using the smc PENTAX-DA 18-270mmF3.5-6.3ED SDM, well specifically this lens being compatible with the auto-focus on the kp - best I can see it functions only in the manual focus mode when attached . . . As a rule of thumb, newer Pentax bodies fully support the AF and exposure systems of older lenses. So, the 18-270mm will work just fine. Since it's a SDM lens, you won't be able to activate continuous video autofocus, but that feature doesn't work particularly well anyway. You can still use on-demand video autofocus, however. All AF modes for stills through the viewfinder and live view are of course supported. I would personally recommend the 18-135mm DC + 55-300mm PLM over the 18-270mm lens, as you'll get better image quality and much faster AF. (plus weather sealing) Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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02-15-2017, 11:27 PM	#2
Racer X 69 Moderator Man With A Camera Join Date: Jun 2010 Location: The Great Pacific Northwet, in the Land Between Canada and Mexico Photos: Gallery \| Albums Posts: 28,065	Hello Gary, welcome to Pentax Forums. There is info on the lens here: SMC Pentax-DA 18-270mm F3.5-6.3 ED SDM Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database It does mention the lack of autofocus compatibility with earlier Pentax bodies (*istD series, K100D and K110D), but nothing about newer ones.

02-20-2017, 07:23 PM	#4
penG Junior Member Join Date: Feb 2017 Location: san luis obispo, ca Photos: Albums Posts: 33	Originally posted by Adam As a rule of thumb, newer Pentax bodies fully support the AF and exposure systems of older lenses. So, the 18-270mm will work just fine. Since it's a SDM lens, you won't be able to activate continuous video autofocus, but that feature doesn't work particularly well anyway. You can still use on-demand video autofocus, however. All AF modes for stills through the viewfinder and live view are of course supported. I would personally recommend the 18-135mm DC + 55-300mm PLM over the 18-270mm lens, as you'll get better image quality and much faster AF. (plus weather sealing) Thanks Adam, good to know.

02-20-2017, 07:25 PM	#5
penG Junior Member Join Date: Feb 2017 Location: san luis obispo, ca Photos: Albums Posts: 33	Originally posted by Racer X 69 Hello Gary, welcome to Pentax Forums. There is info on the lens here: SMC Pentax-DA 18-270mm F3.5-6.3 ED SDM Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database It does mention the lack of autofocus compatibility with earlier Pentax bodies (*istD series, K100D and K110D), but nothing about newer ones. Thanks for the info Racer.

02-20-2017, 09:28 PM	#6
Racer X 69 Moderator Man With A Camera Join Date: Jun 2010 Location: The Great Pacific Northwet, in the Land Between Canada and Mexico Photos: Gallery \| Albums Posts: 28,065	Originally posted by penG Thanks for the info Racer. You're welcome!

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