Nomad Zamani Posted May 24, 2018 Share Posted May 24, 2018 I recently acquired an original H16 Reflex and have a question about the alignment of the mask on the top of the prism. When I look through the reflex finder, I see the outline of the finder itself, with the mask on the prism markedly offset to one side (see attached photo). If I swing the prism out, the mask outline disappears and I see the whole area with the hard black outline around it. Am I right in thinking that this is out of alignment, or is it normal? Link to comment Share on other sites More sharing options...
Phil Soheili Posted May 24, 2018 Share Posted May 24, 2018 There is - right in front of the prism - a gelatine (filter) holder. Just check if it is fully inserted and / or if it actually carries a mask or sth like that. best, Phil Link to comment Share on other sites More sharing options...
Nomad Zamani Posted May 24, 2018 Author Share Posted May 24, 2018 Still get the same thing with the filter holder removed. Link to comment Share on other sites More sharing options...
Premium Member Simon Wyss Posted May 24, 2018 Premium Member Share Posted May 24, 2018 Neither the prism cache nor a filter slide is misaligned. That thing is the front prism in the finder chute decentred. Link to comment Share on other sites More sharing options...
Nomad Zamani Posted May 24, 2018 Author Share Posted May 24, 2018 The grey outline is the mask. When I slacken the one screw that's accessible, I can move the mask around a little. When I do that, its position changes in the finder. I'm not saying something isn't decentred in the finder's optical path, however. The issue with the mask is that the screw goes into a slot that allows it to move front to back (up/down in the finder), but there's very little scope to move it left/right - the side of the slot hits the screw. The attached shows it after some adjustment - moved down and left a little when viewed through the finder, enough to get the missing rounded corners into view. I did take the plate off that covers the parallelogram prism and had a look. There were packers at the top and on the right-hand sloping face (viewed from the front), and it all felt pretty solid. I could have a closer look to see if it might have become decentred, although I don't think I want to take it out unless I have something suitable to use as replacement packers (I suspect the original ones will disintegrate). Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted May 24, 2018 Premium Member Share Posted May 24, 2018 The prism at the end of the viewfinder tube should have 3 adjustments, you need a slotted driver (or a small tube filed to have to prongs) to turn the nuts and some acetone to dissolve the paint that is often sealing the nuts in place. I use an old viewfinder cover plate with the front part cut off so I can adjust while looking through the finder, and it's hard to see without the cover on. Link to comment Share on other sites More sharing options...
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