karl101 Posted September 19, 2009 Share #1 Posted September 19, 2009 Advertisement (gone after registration) Hello, Does this happen to anyone else. Today I bought a Summicron 90mm for my M8.2. I spent the rest of the day out and about in the countryside getting familiar with the lens. Now I'm home having taken 370 odd pictures over 6 hours, my left eye, the one I close when taking the picture, is now out of focus. The right is OK. Does everyone else have this? is there a cure? I expect it'll get back to normal overnight. I think one of the possible reasons its happened is that I spent more time focusing than I would with my other lens. Karl. Link to post Share on other sites More sharing options...
Advertisement Posted September 19, 2009 Posted September 19, 2009 Hi karl101, Take a look here My eye is now out of focus?. I'm sure you'll find what you were looking for!
Doc Henry Posted September 19, 2009 Share #2 Posted September 19, 2009 Karl, Have you used a magnifier with the 90mm lens? I think 6 hours behind a viewfinder is a bit too much... We must now wait for it to return to normal but if it persists should see an ophthalmologist ! Link to post Share on other sites More sharing options...
redbaron Posted September 19, 2009 Share #3 Posted September 19, 2009 You're probably closing the eye too tightly, causing the eyelids to push on the cornea. This changes its shape tempoararily. It'll fix itself, but try not to close the eye so hard. Link to post Share on other sites More sharing options...
UliWer Posted September 19, 2009 Share #4 Posted September 19, 2009 You can focus - even with the 90mm Summicron - leaving your left eye open. Otherwise you can do a little workout for your eyes by alternate closing the left and the right one when they are not behind the viewfinder. Link to post Share on other sites More sharing options...
ho_co Posted September 20, 2009 Share #5 Posted September 20, 2009 I think you're squinting the eye, as redb said. Just close it naturally. Another trick (awkward with M) is to hold the camera so your left hand blocks your left eye. Best move is what Uli said: Just leave it open. (I'm assuming it's not your dominant eye, since you're focusing with the right eye.) Your brain will quickly learn not to process those data while you're focusing. And it won't cause you any problems, because it will return automatically to binocular vision when you put the camera down. Link to post Share on other sites More sharing options...
rleffingwell Posted September 20, 2009 Share #6 Posted September 20, 2009 Hello Karl, I've had this problem for decades. Whether using DSLR, SLR models, or my Leicas, it happens and it does go away. I have found over many decades with Leicas that you can shoot and focus with both eyes open and that does mitigate the condition considerably. You also can learn to focus and shoot with either eye with practice. But after a six-hour shoot - depending on your age - I don't think this is uncommon. Link to post Share on other sites More sharing options...
karl101 Posted September 20, 2009 Author Share #7 Posted September 20, 2009 Advertisement (gone after registration) Thanks for the advice. This morning my eye has returned to normal. I'll try the both eyes open method, and possibly the magnifier as it seems at f2 on the 90mm I have to be spot on with the focusing. Karl. Link to post Share on other sites More sharing options...
wda Posted September 20, 2009 Share #8 Posted September 20, 2009 I guess you are squinting a little to get the focus area sharp. If so, you would definitely benefit from fitting an eyepiece magnifier. Although I was reluctant to do so, not the least because of the cost, the 1.4x Leica magnifier certainly enables me focus more accurately when using lenses of 50mm or longer. I use the 75mm quite often, occasionally a 90mm and I can assure you that it definitely makes a difference. It is not much of chore to have it dangling when you fit a wide-angle lens, although I recommend that you stow it in the supplied little leather container. Link to post Share on other sites More sharing options...
Shootist Posted September 21, 2009 Share #9 Posted September 21, 2009 I get this also but mostly in bright sunlight. After having my left eye closed for a while, looking through the VF of the M with my right eye, after opening my left it is hard to get good focus with either eye. Going into some shade for a short time fixes this. I put it off to the iris of my left eye when closed opens all the way, wide open, and then when I open that eye it takes a short time for the iris to come back to nearly closed, stopped down, making it hard for either eye to focus correctly. Link to post Share on other sites More sharing options...
picture Posted September 22, 2009 Share #10 Posted September 22, 2009 Your left eye might be back focusing, send it to Solms and they'll fix it for you. Link to post Share on other sites More sharing options...
ryee3 Posted September 22, 2009 Share #11 Posted September 22, 2009 It may have gotten dry. If you are farsighted, you have tired out the ciliary body muscle that helps us focus. If you are 40 something then it may be related to presbyopia. Go see your local ophthalmologist to make sure there is nothing serious going on. Link to post Share on other sites More sharing options...
underground Posted September 22, 2009 Share #12 Posted September 22, 2009 I know this might be repetitive but opening both eye's with the magnifier is outstanding. I have that problem as well and using the magnifier make's all the difference. For me using both eye seemed to speed things up a bit. But its not for everyone. I wish you luck. Link to post Share on other sites More sharing options...
mojobebop Posted September 27, 2009 Share #13 Posted September 27, 2009 Greetings, Normally with my nikon f100 I have to adjust the diopter, otherwise the image is blurred. Are there diopters available for leica. The nikon comes with the camera, so I have no idea which one to purchase. If so, is it necessary to buy Leica, or are there others out there. In the NYC area, I'm assuming B&H would be the source. Thanks, Link to post Share on other sites More sharing options...
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