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01-24-2014, 01:52 PM   #1
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645N focusing screen with both splitscreen and microprism?

Hi all!

Just bought my first Pentax 645N (after having started out with a K1000 in 1999 or so, it seems I have come full circle! ).

I was happy to see that the owner had installed a manual focus-screen, as the AB-82 seems expensive to buy loose. I'm slightly confused however - the AB-82 screen is supposed to have only split-screen focusing. My screen has both split-screen and a microprism-"donut" around it. Is this a 645 screen fitted to 645n, or something else?

Dag

01-24-2014, 05:08 PM   #2
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Join Date: Feb 2011
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QuoteOriginally posted by dag.bb Quote
Hi all!

Just bought my first Pentax 645N (after having started out with a K1000 in 1999 or so, it seems I have come full circle! ).

I was happy to see that the owner had installed a manual focus-screen, as the AB-82 seems expensive to buy loose. I'm slightly confused however - the AB-82 screen is supposed to have only split-screen focusing. My screen has both split-screen and a microprism-"donut" around it. Is this a 645 screen fitted to 645n, or something else?

Dag
If it has both split-image and microprism, it's an aftermarket screen.
01-31-2014, 09:09 AM   #3
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Original Poster
Found a solution...

I ordered an new AB-82 645N split-screen (without microprism) as a replacement, as the existing screen's microprism and splitscreen was never in complete agreement with the autofocus/beep. On replacing I found that the mounted screen was marked C21, e.g. a UC-21 screen for the 645. Not so happy with the seller, after all. So, buyer beware - if you find a 645N advertised as having a microprism and splitscreen - it's the 645-version, and manual focusing based on the screen will not be exact, even though the AF-system still works fine, and is correct.

Last edited by dag.bb; 01-31-2014 at 09:18 AM.
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