mdg1371 Posted January 28, 2022 Share #1 Posted January 28, 2022 Advertisement (gone after registration) One of my first thoughts when I saw that the meter assembly was gone from the chamber of the M11, was “Time to get the 21 S.A. and DR Cron back in action!” However, I am noticing a significant front focus issue when using the DR Summicron with the goggles— obviously I realize the Visoflex is a better solution, but it would be nice if the lens functions as intended with the goggles. ‘Given that the M10/M11 series has the lens mount extended further out from the front of the body/ RF/Viewfinder, this creates a gap between the goggles and the windows, even when they are fully mounted on the lens. (See pic). With the goggles not sitting flush with the RF/Viewfinder windows as they would on other bodies, could this be the source of the focus error? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/329143-m11-and-dr-summicron-focus-error/?do=findComment&comment=4369999'>More sharing options...
Advertisement Posted January 28, 2022 Posted January 28, 2022 Hi mdg1371, Take a look here M11 and DR Summicron focus error?. I'm sure you'll find what you were looking for!
wimdev Posted January 28, 2022 Share #2 Posted January 28, 2022 It does sit a little further away on my M10D compared to my M3, perhaps 2 or 3 mm. To test things out, I set up both cameras at a fixed distance to a target (~0.6m). I could not detect any difference though, both focused to the same position on the barrel. Are your goggles properly calibrated? They're adjustable at the round lens. Even though my goggles work fine, I usually use the visoflex to make sure. Depth of field can get pretty shallow. Willem Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! 2 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/329143-m11-and-dr-summicron-focus-error/?do=findComment&comment=4370070'>More sharing options...
Hanno Posted March 8, 2022 Share #3 Posted March 8, 2022 (edited) Hi @mdg1371 - did you solve your issue ? As FYI, I received today a Summicron DR, and just tested it (luckily the cat was sleeping 😀). I didn't find any issue with focusing through the goggles. One of the shots at close distance below (f/2, 1/125s and ISO 1000), click for a better image. I agree I would probably be tempted to use it more with the Visoflex 2 at close range, as at 0.5-1m the DOF is so thin. Also, I am impressed at the pairing of the Summicron DR with the M11. Beautiful rendering. There was no vignetting at f/2, I had to add a tiny bit! 😀 Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Edited March 8, 2022 by Hanno 2 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/329143-m11-and-dr-summicron-focus-error/?do=findComment&comment=4397470'>More sharing options...
mdg1371 Posted March 17, 2022 Author Share #4 Posted March 17, 2022 On 3/8/2022 at 6:06 PM, Hanno said: Hi @mdg1371 - did you solve your issue ? As FYI, I received today a Summicron DR, and just tested it (luckily the cat was sleeping 😀). I didn't find any issue with focusing through the goggles. One of the shots at close distance below (f/2, 1/125s and ISO 1000), click for a better image. I agree I would probably be tempted to use it more with the Visoflex 2 at close range, as at 0.5-1m the DOF is so thin. Also, I am impressed at the pairing of the Summicron DR with the M11. Beautiful rendering. There was no vignetting at f/2, I had to add a tiny bit! 😀 Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Sent the DR off to DAG to be calibrated— came back like new, accurate with and without goggles! 1 Link to post Share on other sites More sharing options...
wimdev Posted March 19, 2022 Share #5 Posted March 19, 2022 I think the 50mm DR is a fantastic lens. I have it on my camera pretty much all of the time. WIllem 1 Link to post Share on other sites More sharing options...
Infantasy Posted April 11, 2022 Share #6 Posted April 11, 2022 On 1/28/2022 at 10:48 AM, wimdev said: It does sit a little further away on my M10D compared to my M3, perhaps 2 or 3 mm. To test things out, I set up both cameras at a fixed distance to a target (~0.6m). I could not detect any difference though, both focused to the same position on the barrel. Are your goggles properly calibrated? They're adjustable at the round lens. Even though my goggles work fine, I usually use the visoflex to make sure. Depth of field can get pretty shallow. Willem Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! @wimdev Do you know how to adjust the round lens for calibration? Mine is very tight. Link to post Share on other sites More sharing options...
wimdev Posted April 12, 2022 Share #7 Posted April 12, 2022 Advertisement (gone after registration) It can be a bit tight, especially after 6+ decades. I had to squeeze hard. You need to unscrew the front end counter clockwise. Alternatively, with a proper tool, you can screw the back (black end) clockwise to loosen both up. The black end is the screw, and the chrome front is the nut so to speak. The calibration itself is a fiddly process. The back lens assembly and the front lens both move the focusing patch up, down, left and right by rotation. You need to pick a flat high-contrast target about 2 feet away. Calibrate with the EVF / Live View to make sure it's good. Then fiddle with the back & front assemblies to align the patch both horizontally and vertically by looking through the optical view finder. This process involves taking the goggles on & off a lot. It also may include removing / loosening the front lens from its holder to change the relative orientation between the back and front. In my case it was loose to begin with and rattling around. That's why I had to calibrate in the first place. If it's still glued in, I'd first check the positioning of the back assembly without messing with the front. Good luck, Willem Link to post Share on other sites More sharing options...
Infantasy Posted April 12, 2022 Share #8 Posted April 12, 2022 (edited) @wimdev According to the drawing, the front lens (10) seems to be a flat element while the back lens (8) is a glass block with curved end. Do you mean adjusting the front also affect the focus patch? The back lens of mine is still stuck on the back end screw and cannot be unscrewed, do you think removing the front could make access to the back lens? Thanks a lot. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Edited April 12, 2022 by Infantasy Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/329143-m11-and-dr-summicron-focus-error/?do=findComment&comment=4417020'>More sharing options...
wimdev Posted April 13, 2022 Share #9 Posted April 13, 2022 Rotating lens 10 does move the patch in my setup. It must have a small wedge to it. 7 screws into 9, and since there's no thread in 17, once loose you should be able to rotate both. I would not mess with removing 8 from 7. Hope this helps, Willem Link to post Share on other sites More sharing options...
Infantasy Posted April 13, 2022 Share #10 Posted April 13, 2022 Got it. Thanks. Link to post Share on other sites More sharing options...
Infantasy Posted April 13, 2022 Share #11 Posted April 13, 2022 I used my wife's nail paint remover to soften the cement of 9 then successfully unscrew the whole things. The glass block was cleaned and it is the most tricky time to tighten 9 with 7 but keeping the combined focus patch by 10 and 8 matched with the RF. Although the glass plate 10 seems flat, I think it may be a polarizer which give different reflection while rotation. From this, I guess some people saying the goggles mismatch with the lens is mainly due to the front glass plate 10 loosened as it was just stuck by double side tape or glue which may loosen over time and rotated to an incorrect angle. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/329143-m11-and-dr-summicron-focus-error/?do=findComment&comment=4417857'>More sharing options...
wimdev Posted April 14, 2022 Share #12 Posted April 14, 2022 Glad it all worked out for you. cheers, Willem Link to post Share on other sites More sharing options...
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