Lens compatiblity

davea · 05-19-2021, 10:11 AM

I have a K110D which I've had for more than 14 years. Camera works well, but I've been thinking of updating to a newer camera. My question is that I have two lens, a Pentax 28-80 and a Sigma 70-30, both are K mounts. Will these lens fit a new camera such as the K70 or K1?

**aslyfox** · 05-19-2021, 10:26 AM

these charts might be of interest

Quote:

Pentax K-Mount Lens Series Explained: The differences between various Pentax lens series

Pentax K-Mount Lenses Explained: The differences between various Pentax lens series

Quote:

Pentax K-mount Lens Compatibility Chart
Copyright 2006-2020 Mosphotos.com. All rights reserved.

The Pentax K-mount Camera Lens Compatibility Chart

and this tool as well

Quote:

Check Lens Compatibility with your Pentax Camera
Most Pentax lenses are compatible with most Pentax cameras. However, there are some exceptions to this rule, including limitations with certain lenses. It's always a good idea to check before buying a lens.

This tool lets you check the compatibility of your Pentax digital camera with any Pentax lens or any current third-party lens. Type a partial name to see suggestions. See also: Lens Search | Camera Database

Read more at: Check Lens Compatibility with Your Pentax Camera

**MossyRocks** · 05-19-2021, 11:06 AM

Cameras being backward compatible with old lenses is usually how things work so if a lens work on an older body it should (unless there is something that has gone wrong) work on a newer body. Lenses however may not be supported by older bodies like the PLM lenses on something like at K110D.

Wasp · 05-19-2021, 12:25 PM

The Pentax 28-80 and Sigma 70-300 are both full frame lenses and will work on the K1. It will get you started but for the very best results you might want more modern glass.

**ramseybuckeye** · 05-19-2021, 01:12 PM

Originally posted by davea

I have a K110D which I've had for more than 14 years. Camera works well, but I've been thinking of updating to a newer camera. My question is that I have two lens, a Pentax 28-80 and a Sigma 70-30, both are K mounts. Will these lens fit a new camera such as the K70 or K1?

The direct answer is Yes

**mikesbike** · 05-19-2021, 02:40 PM

Since both of your current lenses were designed for 35mm film use (the same size as the sensor of a full-frame DSLR like the K-1, ) If you are going to stick with an APS-C camera like the one you have, the upgrade being to the K-70, you will continue to have no wide angle shooting available, as you now have. If you go to the FF K-1 II, your 28-80mm can then provide wide angle also. But I would not suggest buying either new camera based on the lenses you now have, as they are not of good enough quality to spend money towards a camera for their use.

What I am saying is, if you are gong to upgrade over what you have, by all means be sure to upgrade in new lenses as well.

And, welcome to the forum!

davea · 05-22-2021, 02:38 PM

Thank you all for taking the time to help me with your comments. Stay safe and well.

05-19-2021, 10:11 AM	#1
davea New Member Join Date: Dec 2020 Posts: 10	Lens compatiblity I have a K110D which I've had for more than 14 years. Camera works well, but I've been thinking of updating to a newer camera. My question is that I have two lens, a Pentax 28-80 and a Sigma 70-30, both are K mounts. Will these lens fit a new camera such as the K70 or K1?

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05-19-2021, 10:26 AM	#2
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,581	these charts might be of interest Quote: Pentax K-Mount Lens Series Explained: The differences between various Pentax lens series Pentax K-Mount Lenses Explained: The differences between various Pentax lens series Quote: Pentax K-mount Lens Compatibility Chart Copyright 2006-2020 Mosphotos.com. All rights reserved. The Pentax K-mount Camera Lens Compatibility Chart and this tool as well Quote: Check Lens Compatibility with your Pentax Camera Most Pentax lenses are compatible with most Pentax cameras. However, there are some exceptions to this rule, including limitations with certain lenses. It's always a good idea to check before buying a lens. This tool lets you check the compatibility of your Pentax digital camera with any Pentax lens or any current third-party lens. Type a partial name to see suggestions. See also: Lens Search \| Camera Database Read more at: Check Lens Compatibility with Your Pentax Camera

05-19-2021, 11:06 AM	#3
MossyRocks Loyal Site Supporter Join Date: Nov 2017 Location: Minnesota Photos: Gallery \| Albums Posts: 2,982	Cameras being backward compatible with old lenses is usually how things work so if a lens work on an older body it should (unless there is something that has gone wrong) work on a newer body. Lenses however may not be supported by older bodies like the PLM lenses on something like at K110D.

05-19-2021, 12:25 PM	#4
Wasp Pentaxian Join Date: Mar 2017 Location: Pretoria Photos: Gallery Posts: 4,660	The Pentax 28-80 and Sigma 70-300 are both full frame lenses and will work on the K1. It will get you started but for the very best results you might want more modern glass.

05-19-2021, 01:12 PM	#5
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,291	Originally posted by davea I have a K110D which I've had for more than 14 years. Camera works well, but I've been thinking of updating to a newer camera. My question is that I have two lens, a Pentax 28-80 and a Sigma 70-30, both are K mounts. Will these lens fit a new camera such as the K70 or K1? The direct answer is Yes

05-19-2021, 02:40 PM	#6
mikesbike Site Supporter Join Date: Dec 2016 Location: Southeastern Michigan Posts: 4,549	Since both of your current lenses were designed for 35mm film use (the same size as the sensor of a full-frame DSLR like the K-1, ) If you are going to stick with an APS-C camera like the one you have, the upgrade being to the K-70, you will continue to have no wide angle shooting available, as you now have. If you go to the FF K-1 II, your 28-80mm can then provide wide angle also. But I would not suggest buying either new camera based on the lenses you now have, as they are not of good enough quality to spend money towards a camera for their use. What I am saying is, if you are gong to upgrade over what you have, by all means be sure to upgrade in new lenses as well. And, welcome to the forum!

05-22-2021, 02:38 PM	#7
davea New Member Join Date: Dec 2020 Posts: 10 Original Poster	Thank you all for taking the time to help me with your comments. Stay safe and well.