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**Alex645** · 12-12-2020, 01:37 AM - **1 Like**

Although one of the assets of Pentax DSLRs is backward compatibility with older lenses, one must realize that lenses designed for 35mm film are not optimized for APS-C CMOS sensors. I think it's fun and satisfying to use and see the character of using non-DA or non-DFA lenses, but there is a lot of potential that I believe many Pentaxians are missing without exploring the limiteds and stars. After all, it's just money!

**GUB** · 12-12-2020, 02:52 AM - **1 Like**

Originally posted by Lhorn

s using LV with focus peaking a better option than the green hexagon?

For me it is. But prerequisites are decent lighting conditions on your screen and decent close up eyesight.
I use a LCD viewfinder to aid in these two and I believe that is the most precise way to focus especially with LV magnification. But you need time.

Not a Number · 12-12-2020, 11:39 AM - **1 Like**

K-mount compatibility can be checked here:
The Pentax K-mount Camera Lens Compatibility Chart
Check Lens Compatibility with Your Pentax Camera

**DWS1** · 12-12-2020, 06:07 PM - **1 Like**

I've just about given up on manual focus lenses unless I can change to a split image focus screen.

**cobbu2** · 12-12-2020, 08:07 PM - **1 Like**

Here’s the best complete summary for manual K-mount and M42 lenses on Pentax DSLRs:

How to use/meter Manual & M42 Lenses on all Pentax DSLRs (K-1, K-3, K-5, K-30, etc) - PentaxForums.com

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12-12-2020, 01:37 AM - 1 Like	#16
Alex645 Site Supporter Join Date: May 2015 Location: Kaneohe, HI Photos: Albums Posts: 3,527	Although one of the assets of Pentax DSLRs is backward compatibility with older lenses, one must realize that lenses designed for 35mm film are not optimized for APS-C CMOS sensors. I think it's fun and satisfying to use and see the character of using non-DA or non-DFA lenses, but there is a lot of potential that I believe many Pentaxians are missing without exploring the limiteds and stars. After all, it's just money!

12-12-2020, 02:52 AM - 1 Like	#17
GUB Loyal Site Supporter Join Date: Aug 2012 Location: Wanganui Photos: Gallery \| Albums Posts: 5,760	Originally posted by Lhorn s using LV with focus peaking a better option than the green hexagon? For me it is. But prerequisites are decent lighting conditions on your screen and decent close up eyesight. I use a LCD viewfinder to aid in these two and I believe that is the most precise way to focus especially with LV magnification. But you need time.

12-12-2020, 11:39 AM - 1 Like	#18
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	K-mount compatibility can be checked here: The Pentax K-mount Camera Lens Compatibility Chart Check Lens Compatibility with Your Pentax Camera

12-12-2020, 06:07 PM - 1 Like	#19
DWS1 Site Supporter Join Date: Aug 2018 Location: Arkansas, USA Posts: 1,169	I've just about given up on manual focus lenses unless I can change to a split image focus screen.

12-12-2020, 08:07 PM - 1 Like	#20
cobbu2 Loyal Site Supporter Join Date: May 2013 Location: North Potomac, MD Photos: Albums Posts: 1,444	Here’s the best complete summary for manual K-mount and M42 lenses on Pentax DSLRs: How to use/meter Manual & M42 Lenses on all Pentax DSLRs (K-1, K-3, K-5, K-30, etc) - PentaxForums.com

Vintage lenses on my dslr

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