Question about K Mount Lenses

Marnie642 · 05-19-2018, 05:55 PM

I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70.

**ramseybuckeye** · 05-19-2018, 06:04 PM

Originally posted by Marnie642

I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70.

Yes they will work. The auto focus lenses (F and FA) will auto focus and be fully auto when the aperture ring is set to the 'A' position. Pentax-A lenses will work with manual focus and auto aperture as long as the "A" setting is used on the aperture ring. Pentax-M and 'K" lenses are fully manual but the green button can help (do the search, there is a lot of info here). The screw mount Takumar lenses will need an adapter to work.

Not a Number · 05-19-2018, 06:24 PM

Refer to the Compatibility Chart:
The Pentax Camera Lens Compatibility Chart

And these threads on how to use manual focus lenses
How to use/meter Manual & M42 Lenses on all Pentax DSLRs (K-1, K-3, K-5, K-30, etc) - PentaxForums.com
Manual Metering on Pentax DSLRs with Manual and Automatic Lenses - PentaxForums.com

Sandy Hancock · 05-19-2018, 06:56 PM

In addition to what Tom said, also be aware that the K-70 has an APS-C sensor, so all your old lenses will have narrower fields of view than you are used to.

Welcome to the digital age

swanlefitte · 05-19-2018, 07:02 PM

Yep, work the same with menu set right and metering may be different.

Adam · 05-19-2018, 07:11 PM

Originally posted by Marnie642

I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70.

Yes you can. As a rule of thumb, any older Pentax lens will work with a newer Pentax digital camera.

angerdan · 05-20-2018, 02:42 AM

Also worth mentioning are:
Pentax K-Mount Lenses Explained: The differences between various Pentax lens series
Table of Supported Exposure Modes by Lens / Lens lineup/ Lenses / Products | RICOH IMAGING

Marnie642 · 05-20-2018, 06:24 AM

Thank you for clearing this up, I just didn't want to not lose the use of these lenses.

GeneV · 05-21-2018, 11:49 AM

Biggest limitations beyond those of the time the lens was made are for pre-KA mount lenses. They don’t work with P-TTL flash and can be a little inconvenient to meter.

05-19-2018, 05:55 PM	#1
Marnie642 Junior Member Join Date: May 2018 Posts: 49	Question about K Mount Lenses I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70.

05-19-2018, 07:11 PM	#6
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by Marnie642 I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70. Yes you can. As a rule of thumb, any older Pentax lens will work with a newer Pentax digital camera. 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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05-19-2018, 06:04 PM	#2
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,292	Originally posted by Marnie642 I have an old Pentax ME (film) camera with lots of lenses, some are manual and a couple are AF. The question is can I use these K- mount lenses on a newer Pentax digital camera. I really like to purchase the Pentax K70, would the older lenses I have work on the K70. Yes they will work. The auto focus lenses (F and FA) will auto focus and be fully auto when the aperture ring is set to the 'A' position. Pentax-A lenses will work with manual focus and auto aperture as long as the "A" setting is used on the aperture ring. Pentax-M and 'K" lenses are fully manual but the green button can help (do the search, there is a lot of info here). The screw mount Takumar lenses will need an adapter to work.

05-19-2018, 06:24 PM	#3
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	Refer to the Compatibility Chart: The Pentax Camera Lens Compatibility Chart And these threads on how to use manual focus lenses How to use/meter Manual & M42 Lenses on all Pentax DSLRs (K-1, K-3, K-5, K-30, etc) - PentaxForums.com Manual Metering on Pentax DSLRs with Manual and Automatic Lenses - PentaxForums.com

05-19-2018, 06:56 PM	#4
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	In addition to what Tom said, also be aware that the K-70 has an APS-C sensor, so all your old lenses will have narrower fields of view than you are used to. Welcome to the digital age

05-19-2018, 07:02 PM	#5
swanlefitte Pentaxian Join Date: May 2015 Location: Minneapolis Photos: Gallery Posts: 4,068	Yep, work the same with menu set right and metering may be different.

05-20-2018, 02:42 AM	#7
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,639	Also worth mentioning are: Pentax K-Mount Lenses Explained: The differences between various Pentax lens series Table of Supported Exposure Modes by Lens / Lens lineup/ Lenses / Products \| RICOH IMAGING

05-20-2018, 06:24 AM	#8
Marnie642 Junior Member Join Date: May 2018 Posts: 49 Original Poster	Thank you for clearing this up, I just didn't want to not lose the use of these lenses.

05-21-2018, 11:49 AM	#9
GeneV Veteran Member Join Date: Oct 2008 Location: Albuquerque NM Photos: Albums Posts: 9,830	Biggest limitations beyond those of the time the lens was made are for pre-KA mount lenses. They don’t work with P-TTL flash and can be a little inconvenient to meter.