Where does the crop mask go, on top or below?

Discussions regarding Phase One 645 AF and Mamiya 645AFDIII Camera

Where does the crop mask go, on top or below?

Postby Hillie » Sat Sep 17, 2011 5:27 am

Hi all,

Just got the Brightscreen split image focus screen, read up about the install procedure and decided to change the original. I bought this Phase One 645AF set with a P20+ back used, so the crop mask was in already.

However, I was surprised to find the plastic crop mask between the mirror and the focus screen in the focus screen tray. I would've thought it would be on top of the focus screen, to keep the matte side alighned. I checked the sheet and it does look like it's more made to go into the holder first, then the focus screen and then close it back up, but it seems a bit counterintuitive to me.

So, my question is: What is the right place for that crop mask? I did find the focus point was slightly further than where I was focusing, which raised my concerns more. Any inputs?

Thanks!
Hillie
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Re: Where does the crop mask go, on top or below?

Postby Hillie » Sat Sep 17, 2011 6:04 am

OK, nevermind, I found it in one of the PDFs. The mask goes below the focus screen. So perhaps the screen isn't of exact thickness or I messed something up. I'll test some more in the morning. :)
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Re: Where does the crop mask go, on top or below?

Postby Ulf » Tue Sep 20, 2011 11:09 am

Ulf
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Re: Where does the crop mask go, on top or below?

Postby Hillie » Wed Sep 21, 2011 10:10 pm

Hi Ulf,

Thanks, that was quite helpful. I should've searched youtube as well. :)
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