|
Forum: Pentax DSLR Discussion
08-26-2009, 12:34 PM
|
| |
Had my K20D camera for about 11 months now and always had a focusing problem but blamed my cheap (really cheap) poor lenses. Ponied up some ducets and bought a couple of better lenses. Now I could really see a severe back focus problem. Testing only agrivated me more. I was consistantly 1 to 3 inches back of my focus point. (I had been compensating by stopping down).
I shoot only manual focus. Usually with a tripod, and don't notice much difference with shake reduction on or off.
I called Pentax support. They referred me to the adjustment procedure for auto-focus lenses. They they asked about my lenses. Opps, we can't help you with your problem because some of them are not Pentax branded, though some were.
I kept telling them the problem was in the body and most likely the focusing screen. Not a bit of willingness to hear me out.
While I was stewing we ordered a new focusing screen from the Pentax store and the tool to replace it. (Don't order the tool, it comes with the screen).
I installed the LI-80 screen as opposed to the standard screen and tested it out on my sharp old trusty Pentax A f2.0 and it looked good.
Next I installed my 85mm f1.4 portrait lens which had about 3" of back focus. Now we focused on some real human subjects and checked the results and it was perfectly focused on the point I chose. YES. YES. YES.
I figure Pentax owes me the cost of a new focusing screen and tool but am not holding my breath. I am this .... close to chucking 30 years of shooting Pentax for another brand.
Check out the cats eye focusing screen website. Am considering a purchase there as they are better designed for low light and manual focus which is primarily where all my shooting is done.
|
