Archived posting to the Leica Users Group, 2001/03/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]If the lens "works beautifully, with no flare or ghost images", I don't think you have anything to worry about. dan c. At 08:02 AM 15-03-01 +0800, Dr H L Lau wrote: >Hello all, > >Could you please help me on this? > >I have a 50mm Summilux (no. 166xxxx) M-mount, probably made in 1959, which I bought used some time ago. One day when my friend looked at this lens, he said it had something weird about its coating. The >reason he gave is that when you look at the reflected images from the lens surface under a lamp, the series of reflected images are coloured (which is normal) but one of them in the middle of the series is >not coloured (white if you look under a fluorescent lamp, which he said is abnormal and shows a coating problem or re-coating). > >The lens works beautifully, with no flare or ghost images (well, I did not shoot at a light source). > >Is there really a coating problem? Or is it "normal" for a Summilux of this vintage? I've looked into Laney, Bower and Kisselbach and could not find an answer. Is this something I have to look out for when >buying used lenses in future?