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04-17-2012, 09:57 PM   #1
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Pentax 67 Prism Diopter

Hey all. Finally pieced together my Pentax 67 kit and immediately noticed one major issue: because I wear glasses I was not able to see the whole viewfinder -- in fact my view was very much cropped. However, because the 67 TTL Prism doesn't have an adjustable diopter I could not see well enough through the prism without my glasses on. So after doing some research on this forum and other places, I decided to take out the glass/ring and bring it to my optometrist to see if they could make a prescription diopter for me. Turns out they are going to do it (though it will cost about $65). My prescription is actually -1.75 FYI -- and yes I hate wearing contacts. Anyway I will update here when I get the glass in and report on how well this worked.

Anyone else have a similar experience, and if so what was your solution?

04-18-2012, 06:47 AM   #2
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I bought a Pentax diopter for a lot less than that, but I don't know how easily available they are now.
04-18-2012, 07:41 AM   #3
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Yeah I did not have much luck finding one. Seems most diopters out there for the 67/6x7 prism are for farsighted people.
04-18-2012, 08:11 AM   #4
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You could try a Pentax 67 Right Angle Finder. It has a diopter adjustment of +3 to -5 and is easy to find, though a bit pricey.

Phil.

04-19-2012, 12:33 AM   #5
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A Nikon F3 / F3HP dioptric correction lens will fit the Pentax 67. I have proven this, but it was not the correct dioptre for me, which I think is +2. I saw that some of the he Nikon lenses had a rubber surround, which is an improvement over the Pentax knurled thingy.
04-19-2012, 02:49 PM   #6
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I gave up looking and cut an old pair of glasses to fit the holder... Dremal required.
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