Program Plus Focus Problem

Thatsjustandy · 01-31-2009, 12:44 AM

Recently I've noticed a focus problem with my Program Plus, I've searched around and haven't found this problem anywhere so it doesn't seem common. The problem is when i focus off to infinity, the split focus screen does not line up, i have tried multiple lens and have tried have had the same problem. I have also taken a lens, focused it on an object around 5 feet away from me and then switched the lens with out changing the focus to two different Pentax camera's. With the two body's that do not have a focus problem, the focus does not change but when i switch the lens to the Program Plus, the focus is off.

what i was wondering is if anyone knows what the problem is and if this is a problem I could fix on my own or if I need to bring it in to a professional.

Nesster · 01-31-2009, 04:14 AM

Clever, that trick of trading a focused lens between bodies.

It does seem like you've eliminated anything but the PgmPlus - it could be the focus screen's somehow gone off registry. There's a lot of info on changing screens around; and someone probably will be able to tell you here as well.

You could look inside this cam and your good cam to see if things look the same up above the mirror. If the screen's loose or somehow moved you might be able to note that.

BetterSense · 01-31-2009, 09:57 PM

I have identical problems with very good condition Program Plus and 50mm f/1.7. It's detailed in this thread here

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/34313-my-progr...-infinity.html

Unfortunately I haven't another Pentax body or lens to compare with. I suppose my focusing screen is misadjusted and my focus is slightly off at all ranges. However the camera takes fine pictures, and I have forgotten about it, until I read this thread again, which made my OCD flare up. I suppose I would have to shoot a bunch of resolution charts with it wide open or something to find out if the focus was really off in absolute terms. It's still interesting to hear of another Program Plus with this issue.

01-31-2009, 12:44 AM	#1
Thatsjustandy New Member Join Date: Jan 2009 Location: Minnesota Posts: 1	Program Plus Focus Problem Recently I've noticed a focus problem with my Program Plus, I've searched around and haven't found this problem anywhere so it doesn't seem common. The problem is when i focus off to infinity, the split focus screen does not line up, i have tried multiple lens and have tried have had the same problem. I have also taken a lens, focused it on an object around 5 feet away from me and then switched the lens with out changing the focus to two different Pentax camera's. With the two body's that do not have a focus problem, the focus does not change but when i switch the lens to the Program Plus, the focus is off. what i was wondering is if anyone knows what the problem is and if this is a problem I could fix on my own or if I need to bring it in to a professional.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Are replacement focus screens available for the Program Plus?	spinwards	Film SLRs and Compact Film Cameras	2	11-03-2009 02:57 PM
Problem with Super Program	iamsam	Film SLRs and Compact Film Cameras	7	08-12-2009 06:29 AM
Problem with Program PLus body	Wxman	Film SLRs and Compact Film Cameras	4	06-01-2009 03:23 AM
Focus screen for Program plus	kevmann	Film SLRs and Compact Film Cameras	3	03-26-2009 02:55 AM
Super A and Program A problem.	kanirasta	Film SLRs and Compact Film Cameras	1	01-26-2009 11:12 AM

01-31-2009, 04:14 AM	#2
Nesster Veteran Member Join Date: Oct 2006 Location: NJ USA Photos: Gallery Posts: 13,072	Clever, that trick of trading a focused lens between bodies. It does seem like you've eliminated anything but the PgmPlus - it could be the focus screen's somehow gone off registry. There's a lot of info on changing screens around; and someone probably will be able to tell you here as well. You could look inside this cam and your good cam to see if things look the same up above the mirror. If the screen's loose or somehow moved you might be able to note that.

01-31-2009, 09:57 PM	#3
BetterSense Forum Member Join Date: Aug 2008 Location: Dallas Posts: 98	I have identical problems with very good condition Program Plus and 50mm f/1.7. It's detailed in this thread here https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/34313-my-progr...-infinity.html Unfortunately I haven't another Pentax body or lens to compare with. I suppose my focusing screen is misadjusted and my focus is slightly off at all ranges. However the camera takes fine pictures, and I have forgotten about it, until I read this thread again, which made my OCD flare up. I suppose I would have to shoot a bunch of resolution charts with it wide open or something to find out if the focus was really off in absolute terms. It's still interesting to hear of another Program Plus with this issue.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search