Kuzano wrote:
I have used legacy lenses, and came to the conclusion that digital means of focus, ie the focus screens placed in digital cameras are poorly designed for manual focus lenses.
I started switching to Katz-Eye screens with Opti-brite coating and split image/prism style focus patterns.
Problem solved. Usually come with instructions to change screens, but I sent my first one to Katz-Eye for installation.
Here is their web page for Pentax, make sure yours is listed if you follow up on this.
http://www.katzeyeoptics.com/cat--Pentax-DSLRs--cat_pentax.htmlI have used legacy lenses, and came to the conclus... (
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Appreciate the information. I did see that focusing screen on my internet meanderings. Now I will get it :)
I think I solved my focus problem. I believe it was a mechanical issue. I don't think I had the lens/adapter fit in all the way into the camera mount and seated properly.
The Pentax adapter fits very snugly into the camera mount and is a little tricky to seat just right. The lens fits very tight into the adapter and there is resistance to tightening the lens to the adapter. This being a new camera I was a little shy about putting too much torque to the mount. I tightened everything down until it locked and now the focus seems ok.
My only experience using vintage lenses prior to this has been on the Sony a6000. The adapter for that camera is a lock in precision fit- no wondering if it is turned all the way. Also I have found the focus peaking to be very precise and the EVF to be a definite advantage. BUT the Sony does not have in camera stabilization so the Pentax rules- :)
Thanks for all your suggestions.
Kuzano wrote:
I have used legacy lenses, and came to the conclusion that digital means of focus, ie the focus screens placed in digital cameras are poorly designed for manual focus lenses.
I started switching to Katz-Eye screens with Opti-brite coating and split image/prism style focus patterns.
Problem solved. Usually come with instructions to change screens, but I sent my first one to Katz-Eye for installation.
Here is their web page for Pentax, make sure yours is listed if you follow up on this.
http://www.katzeyeoptics.com/cat--Pentax-DSLRs--cat_pentax.htmlI have used legacy lenses, and came to the conclus... (
show quote)
Unfortunately, KatzEye is in the process of shutting down for good. They are stating that they are making one more production run and then that's the end.
lsimpkins wrote:
Unfortunately, KatzEye is in the process of shutting down for good. They are stating that they are making one more production run and then that's the end.
That's too bad. Hopefully, someone will pick up their process.
While my experiences were good, perhaps fiddling with focusing screens puts people off. It was a well accepted and wide spread function in film SLR's. Most of the medium and pro end SLR's had an array of choices for focus screens.
Sorry to hear it.
rehess
Loc: South Bend, Indiana, USA
Kuzano wrote:
While my experiences were good, perhaps fiddling with focusing screens puts people off. It was a well accepted and wide spread function in film SLR's. Most of the medium and pro end SLR's had an array of choices for focus screens.
It
was a well-accepted practice, but I was one of those who was never comfortable having someone open up my camera to fix a "problem" that didn't seem to exist for me. In the days of manual focus, my cameras always provided all the help I needed, so I didn't see any reason to make it better. Today, I would prefer that my camera have some of those same aids, but I do successfully manually focus most of the time, so again, for me that is a non-problem. To be honest, I do use auto-focus most of the time, and when I manually focus, I'm usually using an aperture like f/8 where my lenses provide a reasonable DOF at the distances to my primary area of interest, but even at f/1.7 my 67-year-old eyes still seem to get the job done.
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