pico Posted June 14, 2011 Share #1 Posted June 14, 2011 Advertisement (gone after registration) My wife has a Leica III (I think I got that right) and it has a little adjustable diopter - or something - at the eyepiece and I was startled to find that it really helped me focus more accurately. If that thing isn't a diopter, then what is it, and why did Leica drop it? Link to post Share on other sites More sharing options...
Advertisement Posted June 14, 2011 Posted June 14, 2011 Hi pico, Take a look here Variable Diopter?. I'm sure you'll find what you were looking for!
Washington Posted June 14, 2011 Share #2 Posted June 14, 2011 I don’t know….. but if it is adjustable, and adjusts for a clearer view…. I wish I had one for my M-9! Link to post Share on other sites More sharing options...
Falstaff Posted June 14, 2011 Share #3 Posted June 14, 2011 Is it this? japan exposures | films and more (formerly Megaperls Japan Webshop) Been using them for a couple of years now and they do seems to help - one on my M7 and another on my M9. Curiously, I do not seem to need one when using my M4. The problem with them is that no sooner have you adjusted the diopter for your eye, because there is no way of locking it in, it just moves very easily and therefore defeats the purpose. At least it was like that until Rolo came up with an excellent idea - unscrew the diopter, shove in a washer approximately the right diameter, slightly wider is better, and then screw the bugger in while adjusting it for your eye. It works. Although given Washington's love of tinkering with things, he may well find a more "elegant" solution. Good luck Falstaff Link to post Share on other sites More sharing options...
k-hawinkler Posted June 14, 2011 Share #4 Posted June 14, 2011 May be this one? japan exposures | films and more (formerly Megaperls Japan Webshop) Please note: ATTENTION: due to Leica patent restrictions, this product is not available to customers for rangefinder camera use in Germany and the United States of America! Folks on this forum have pointed out that you could buy it for your hunting scope. I finally found a Leica diopter that seems to work for me. Cheers, K-H. Link to post Share on other sites More sharing options...
Falstaff Posted June 14, 2011 Share #5 Posted June 14, 2011 Yes, K-H, I had forgotten about that restriction. Doesn't affect me as I'm in Europe. Falstaff ps so did you buy it for your hunting scope or have you something else? Link to post Share on other sites More sharing options...
k-hawinkler Posted June 14, 2011 Share #6 Posted June 14, 2011 No, I didn't. The -1 Leica diopter seems to work for me. However, if I ever get a hunting scope, I probably will. The laser pointers (especially the green ones) seem to work just fine on hand guns, even during daylight. Cheers, K-H. Link to post Share on other sites More sharing options...
giordano Posted June 14, 2011 Share #7 Posted June 14, 2011 Advertisement (gone after registration) My wife has a Leica III (I think I got that right) and it has a little adjustable diopter - or something - at the eyepiece and I was startled to find that it really helped me focus more accurately. If that thing isn't a diopter, then what is it, and why did Leica drop it? It's a focus adjustment for the 1.5x magnification Galilean telescope built into the rangefinder, but - just as when focusing binoculars - the focus depends on your eyes as well as on the distance so it servers as a dioptre adjustment too. I guess Leica dropped it because the M range/viewfinders don't need their focus adjusting with distance, and either (a) just didn't think about dioptre adjustment or ( found it couldn't be fitted into the M body without losing too much in the areas of exit pupil, field of view and eye relief. Presumably ( is the reason that Ms still don't have built-in dioptre adjustment. Link to post Share on other sites More sharing options...
Falstaff Posted June 14, 2011 Share #8 Posted June 14, 2011 The laser pointers (especially the green ones) seem to work just fine on hand guns, even during daylight. Cheers, K-H. This could be used for focus conformation on M's, something people have been asking for. Obviously it's here but they just don't know it . Falstaff Link to post Share on other sites More sharing options...
pico Posted June 14, 2011 Author Share #9 Posted June 14, 2011 Thanks for the pointer. I live in the USA so it's out of the question. Bummer. Link to post Share on other sites More sharing options...
Russ L. Miller Posted June 14, 2011 Share #10 Posted June 14, 2011 Pico, MS Optical will sell the eyepiece to a U.S. buyer, if the buyer simply states in the comments section during check-out that the eyepiece isn't being purchased to use with a Leica; this may seem unethical, but since Leica doesn't offer an equivalent product, it seems unethical for the patent restriction to be enforced (I know that this is convenient rationalization). Link to post Share on other sites More sharing options...
myshkine Posted June 14, 2011 Share #11 Posted June 14, 2011 Thanks for the post. It is an interesting item. Especially when you think that eyesight changes with age. I use a -0.5 Leica diopter lens, but at 115 $ it is expensive to replace should my vision worsen. Link to post Share on other sites More sharing options...
jamesk8752 Posted June 14, 2011 Share #12 Posted June 14, 2011 Pico, MS Optical will sell the eyepiece to a U.S. buyer, if the buyer simply states in the comments section during check-out that the eyepiece isn't being purchased to use with a Leica; this may seem unethical, but since Leica doesn't offer an equivalent product, it seems unethical for the patent restriction to be enforced (I know that this is convenient rationalization). If your conscience pricks you for making a false statement, consider asking a fellow forum member (or other friend) who lives outside the US to order the eyepiece from the seller and send it on to you - I did. My conscience is very quiet now. Regards, Jim Link to post Share on other sites More sharing options...
christer Posted June 15, 2011 Share #13 Posted June 15, 2011 there is no way of locking it in, it just moves very easily and therefore defeats the purpose. At least it was like that until Rolo came up with an excellent idea - unscrew the diopter, shove in a washer approximately the right diameter, Falstaff Nail varnish keeps the thing in place too. Still you can loosen it if you need to readjust it. I have to readjust annually, but it is my eyes, not the device. Link to post Share on other sites More sharing options...
christer Posted June 15, 2011 Share #14 Posted June 15, 2011 May be this one? japan exposures | films and more (formerly Megaperls Japan Webshop) Please note: ATTENTION: due to Leica patent restrictions, this product is not available to customers for rangefinder camera use in Germany and the United States of America! . I think that statement ("for rangefinder camera use") is incorrect. You can use the thing on a Leica anywhere you want. It is just that the __sale__ in Germany and the US is restricted. My son who lives in Norway bought one and gave it to me as a present when celebrating Xmas in Hamburg a few years ago. Entirely legal. A very useful device indeed. I now have two, one for each of my M7s. The second one was sent directly to my address in France. I also use it in Germany. Entirely legal. Link to post Share on other sites More sharing options...
MarkP Posted June 15, 2011 Share #15 Posted June 15, 2011 Hi Pico, yes it is a diopter adjuster as per Giordano, and it is a very nice feature nevertheless. Why Leica could fit it in a camera over 60 years old but not in the newest and most technologically advanced WunderKamera is beyond me. It would be a welcome feature. Mark ps: what a shame the M9 isn't as compact as the IIIc. #1 for me on the M10 wish list.................................................. Link to post Share on other sites More sharing options...
myshkine Posted June 15, 2011 Share #16 Posted June 15, 2011 ps: what a shame the M9 isn't as compact as the IIIc. #1 for me on the M10 wish list.................................................. Same for me. A compact digital M (as a film M) and with adjustable diopter lens. It would be a big plus to me for buying it. Link to post Share on other sites More sharing options...
adan Posted June 16, 2011 Share #17 Posted June 16, 2011 Keep in mind that Barnack Leicas used totally separate eyepieces and optics for the rangefinder and for the viewfinder. http://www.kenrockwell.com/leica/images/iiif/D3S_9660-1200.jpg One eyepiece for focusing, and a second finder for framing (a built-in view for 50mm, accessories for other lenses). What works in a stand-alone dedicated RF (with a field of view about like a 135 lens) may not work at all for a combined RF/VF that covers a 50 or 35 or 28 FoV and has multiple "things" to keep in focus (framelines, metering diodes). Link to post Share on other sites More sharing options...
MarkP Posted June 16, 2011 Share #18 Posted June 16, 2011 I take your point Adan. Focussing through the 2nd eyepiece in the IIIc is a pain, although we use a separate finder for framing wide angle lenses on Leicas. However other camera manufacturers seem capable of fitting adjustable diopter eyepieces. Mark Link to post Share on other sites More sharing options...
giordano Posted June 16, 2011 Share #19 Posted June 16, 2011 What's not possible is fitting a variable dioptre eyepiece to the current M range/viewfinder inside the current M body. Adding dioptric adjustment without reducing magnification or eye relief would mean either a major re-design or a clumsy great eyepiece sticking out from the back of the camera (much more obtrusive than the one on the Contax G cameras). Link to post Share on other sites More sharing options...
Washington Posted June 17, 2011 Share #20 Posted June 17, 2011 You know, instead of a washer I think I’d try a suitable silicone rubber o-ring which due to it’s flexibility, allows for some adjustment and still grips the final adjustment. But, being that I don’t have one, I can’t say for certain. Link to post Share on other sites More sharing options...
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