IkarusJohn Posted December 11, 2015 Share #1 Posted December 11, 2015 Advertisement (gone after registration) I'm not sure what's going on here, but I get this strange halo when I use my APO-Elmarit-R 180/2.8 with the Leica R-M adapter stacked on the M-T adapter. I don't get the same effect using the Novoflex R-L adapter (notwithstanding that it is a "dumb" adapter). Any ideas? 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/254259-r-m-l-adapters-stacked/?do=findComment&comment=2947059'>More sharing options...
Advertisement Posted December 11, 2015 Posted December 11, 2015 Hi IkarusJohn, Take a look here R-M-L Adapters stacked. I'm sure you'll find what you were looking for!
earleygallery Posted December 11, 2015 Share #2 Posted December 11, 2015 I'd say it's the in camera 'correction' for certain lenses playing up. Link to post Share on other sites More sharing options...
ramarren Posted December 11, 2015 Share #3 Posted December 11, 2015 I'd say it's the in camera 'correction' for certain lenses playing up. You can test that notion by setting the R lens code to OFF and making an exposure. I seem to recall someone else reporting a similar issue with another lens, maybe the APO Summicron 90? Link to post Share on other sites More sharing options...
Steve Spencer Posted December 12, 2015 Share #4 Posted December 12, 2015 Someone in an earlier thread reported a similar issue with the R 280 f/4 APO telyt. Link to post Share on other sites More sharing options...
wildlightphoto Posted December 12, 2015 Share #5 Posted December 12, 2015 Are there any shiny parts in the light path? Link to post Share on other sites More sharing options...
Likaleica Posted December 12, 2015 Share #6 Posted December 12, 2015 I think it's the narrow throat of the R adapter M, which I believe the Novoflex does not have. I posted a problem with coma using the 90 Apo R, as well as a strange vignetting: 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/254259-r-m-l-adapters-stacked/?do=findComment&comment=2947197'>More sharing options...
masquar Posted December 12, 2015 Share #7 Posted December 12, 2015 Advertisement (gone after registration) John, on the R lenses profile list there are 2 180 Apo Elmarit f2.8 because Leica upgraded the first model they had in order to work with the Apo 1.4 extender. You should choose the correct 180 from the list and the halo disappear. It does not disappear with the 280 Apo Telyt, though. Link to post Share on other sites More sharing options...
alexander Posted December 12, 2015 Share #8 Posted December 12, 2015 hat the same experience.....with R 100mm 2.8 macro; told it my dealer... Link to post Share on other sites More sharing options...
IkarusJohn Posted December 12, 2015 Author Share #9 Posted December 12, 2015 Are there any shiny parts in the light path? Hi Doug, No, not that I can see. All beautifully made Leica matt black finish. I wonder if James is right that it has something to do with profiles, but that wouldn't explain why the lens mounted on the Novoflex adapter causes no problems. I do wonder if it's related to the relatively narrow M mount. Cheers John Link to post Share on other sites More sharing options...
FMB Posted December 12, 2015 Share #10 Posted December 12, 2015 If the problem is occasional, in many cases its very easy to jump a line when one , in a hurry, is selecting the proper lens. I suffered this mistake from time to time. I've used both Apo Telyt 3,4 180 mm and Apo Elmarit 2,8 100 mm Macro with those adapters without any problem. If there were a physical obstacle in those Leica adapters the rare ring would be appeared. Francisco Link to post Share on other sites More sharing options...
FMB Posted December 12, 2015 Share #11 Posted December 12, 2015 It is a positive vignetting. This means that some software is active to make clear the corners. Francisco. Link to post Share on other sites More sharing options...
ramarren Posted December 12, 2015 Share #12 Posted December 12, 2015 I think it's the narrow throat of the R adapter M, which I believe the Novoflex does not have. I posted a problem with coma using the 90 Apo R, as well as a strange vignetting: I think I'll do a more stringent test of my 90, 135, 180, and 250 lenses today ... Link to post Share on other sites More sharing options...
IkarusJohn Posted December 12, 2015 Author Share #13 Posted December 12, 2015 This is my only R lens, so it's not a case of lens profile selection, I don't think. The last used R lens remains selected. I will see if I can reliably reproduce the issue. To be honest, I've has the camera three days, and haven't had the chance to use it much. Link to post Share on other sites More sharing options...
J S H Posted December 12, 2015 Share #14 Posted December 12, 2015 This is my only R lens, so it's not a case of lens profile selection, I don't think. The last used R lens remains selected. I will see if I can reliably reproduce the issue. To be honest, I've has the camera three days, and haven't had the chance to use it much. Do you see the same problem if you choose OFF in the lens selection menu? Link to post Share on other sites More sharing options...
Likaleica Posted December 12, 2015 Share #15 Posted December 12, 2015 I agree that it's probably not software related. No change in what I see with or without correct lens profile. Link to post Share on other sites More sharing options...
FlashGordonPhotography Posted December 12, 2015 Share #16 Posted December 12, 2015 I only have the 80-220 as a reference, but when I look to the rear element with the stacked adaptors I can clearly see the shiny silver rear ring of the 80-200. With a faster lens and larger rear element this ring will be closer to the glass and more likely to reflect onto the rear element of the lens. I'm guessing there's a double/triple reflection going on (sensor/rear lens ring/sensor). Hopefully the true adaptor will cover the rear ring on the R lenses properly. Gordon Link to post Share on other sites More sharing options...
scott kirkpatrick Posted December 12, 2015 Share #17 Posted December 12, 2015 I haven't seen anything as shocking as the white ring around the image in the first post, but I have seen what seems like overcorrection for vignetting with the apo-summicron R 90, and it looks like the other examples above. I don't think constriction due to the stacked adapters is involved, since that would block light to the edges and darken the outside of the frame. I did a quick white wall test with the apo 90 SC-R, and did not see any over correction a f/2.8 thru f.8. There was a bit of visible vignetting at f/2. But I have seen the effect in pictures taken at f/4 or f/5.6, I haven't seen this problem with the Vario-Elmar 35-70/4. A white wall test with that lens showed a little vignetting at 30 mm, wide open, nothing elsewhere. In each case I took the time to identify the lens to the camera, and shot with exposure correction +2.0 . scott Link to post Share on other sites More sharing options...
ramarren Posted December 13, 2015 Share #18 Posted December 13, 2015 I tested Summicron-R 90 Elmarit-R 135 v2 Elmar-R 180 Elmarit-R 180 v1 Telyt-R 250 v1 both with and without lens codes. No ring like that from any of them, with or without. No corner drop-off overcorrection either, far as I can tell from this test. Link to post Share on other sites More sharing options...
IkarusJohn Posted December 13, 2015 Author Share #19 Posted December 13, 2015 Will post another image in the morning - it is a problem. I've looked I they back of the lens with the adapter on, and I can see any shiny ring ... Link to post Share on other sites More sharing options...
masquar Posted December 13, 2015 Share #20 Posted December 13, 2015 As I wrote before, on the R lenses profile there are two 180 APO Elmarit f2.8 listed. One with model number 11273 and the other with number 11357. My model is the 11273, first series, which does not accept the 1.4X converter. The model 11357 Should be the one that does accept the converter. I also had the same halo problem that however disappeared when I chose the correct profile for my APO 180 Elmarit first series model 11273, which does not accept the converter. I frankly do not understand why nobody is trying to choose the correct model of lens. Cheers Massimo Link to post Share on other sites More sharing options...
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