iedei Posted December 31, 2012 Share #1 Â Posted December 31, 2012 Advertisement (gone after registration) i was looking at a 21mm Elmarit from a reputable reseller, and was told that it has 'mild' separation...and that lenses like the 21mm Elmarit and wider lenses are more proned to this sort of mild separation and that "many of them" have some mild separation. Â Do you take those statements as true? Is it true that wider lenses are more proned to show separation over time? Also......are you weary of buying a lens which is described as such? Â I was told the lens doesn't seem to exhibit any major signs of forthcoming issues...and that it should not increase over time. Was also told that it does not interfere with photos. Link to post Share on other sites More sharing options...
Advertisement Posted December 31, 2012 Posted December 31, 2012 Hi iedei, Take a look here 'mild' lens separation.. I'm sure you'll find what you were looking for!
Erik Gunst Lund Posted December 31, 2012 Share #2 Â Posted December 31, 2012 Separation has nothing to do with focal length... It is the aging of the Canada Balsam between two elements due to heat and/or aging. Newer lenses use other types of glue so not so exposed to this problem... Link to post Share on other sites More sharing options...
iedei Posted December 31, 2012 Author Share #3 Â Posted December 31, 2012 Separation has nothing to do with focal length...It is the aging of the Canada Balsam between two elements due to heat and/or aging. Newer lenses use other types of glue so not so exposed to this problem... Â so it would be BS if someone said that wider angle lenses are more prone to separation? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted December 31, 2012 Share #4 Â Posted December 31, 2012 IMHO Yes. Â Heat and/or moisture are a quick killers for Canada balsam. Â Older lenses are more prone to separation. Link to post Share on other sites More sharing options...
Ecar Posted December 31, 2012 Share #5 Â Posted December 31, 2012 Whatever "mild" separation is, I doubt it's going to stop there. And it ain't going to self-heal either. I would stay away from it - unless you can get it at a knock-off price and factor in the cost of the repair. Perhaps you could get a quote from Leica? Link to post Share on other sites More sharing options...
michali Posted January 1, 2013 Share #6 Â Posted January 1, 2013 I agree with Ecar, "mild separation" is simply a nice way of saying that the lens elements have started coming apart and it normally doesn't stop there.....the long term effect of this as the separation increases, may be increase in flaring and loss of contrast. Link to post Share on other sites More sharing options...
Bill W Posted January 1, 2013 Share #7 Â Posted January 1, 2013 Advertisement (gone after registration) Hmmmm I would keep a "mild separation" from the purchase of the lens if it were me. Just a "mild separation" from ones wife can be pretty serious. Link to post Share on other sites More sharing options...
pop Posted January 1, 2013 Share #8 Â Posted January 1, 2013 Sounds a bit like a "mild lens cap" when taking a shot. Link to post Share on other sites More sharing options...
jaapv Posted January 2, 2013 Share #9 Â Posted January 2, 2013 Mild or not mild, things like separation or fungus are stop signs in my book, irrespective of price. Look elsewhere. Link to post Share on other sites More sharing options...
earleygallery Posted January 2, 2013 Share #10 Â Posted January 2, 2013 Agreed, I wouldn't buy a lens with 'mild separation' (unless it was really dirt cheap). Â If it was a lens I already owned I guess I'd carry on using it until the separation affected the image, and then decide if it was worth repairing or not. Link to post Share on other sites More sharing options...
tobey bilek Posted January 3, 2013 Share #11 Â Posted January 3, 2013 Like being just a little pregnant or beginning cancer. Link to post Share on other sites More sharing options...
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