satureyes Posted December 20, 2012 Share #1  Posted December 20, 2012 Advertisement (gone after registration) I think I'm being paranoid.. but..  I was cleaning my camera sensors tonight - just blowing away some dust - but I use a loupe to see the specs - the loupe has LED lights on it.  Out of sheer interest I took a look at my 35 'lux just to see.. so I looked at the rear element. I noticed what looks like an imperfection in the glass - in the centre - and 100% not on the surface. It's possible some gunk from the lens (grease?) but it seems to be in the glass itself.  It's a pretty new lens so not been off my camera so wondering - is this something that would fall within 'acceptable' tolerances or is a trip to the Leica Store in Mayfair on the cards?  I know it 99% isn't likely to affect the image - but for a £3500 lens.. should the glass be perfect- can any gunk even get in there?  Thanks! Link to post Share on other sites More sharing options...
Advertisement Posted December 20, 2012 Posted December 20, 2012 Hi satureyes, Take a look here Imperfect glass?. I'm sure you'll find what you were looking for!
jaapv Posted December 20, 2012 Share #2 Â Posted December 20, 2012 Yes - gunk can go anywhere Link to post Share on other sites More sharing options...
satureyes Posted December 20, 2012 Author Share #3 Â Posted December 20, 2012 lol - so it could be grease from the barrel inside the lens? Â Is there a chance it could be marks in the glass itself? Link to post Share on other sites More sharing options...
Bill W Posted December 20, 2012 Share #4 Â Posted December 20, 2012 Hey, if it worries you, have it looked at and cleaned professionally. You sound a lot like me. Sometimes inconsequential things bug me. Link to post Share on other sites More sharing options...
satureyes Posted December 21, 2012 Author Share #5 Â Posted December 21, 2012 I was more inquisitive if there are elements of imperfection that with the naked eye we may not see.. I only saw it with the sensor loupe.. Â It will bug me though until I take it to the Leica dealer for them to look at Link to post Share on other sites More sharing options...
Bill W Posted December 21, 2012 Share #6 Â Posted December 21, 2012 I am certainly not a lens engineer but I would hope that if there were imperfections in the glass, it would not have been used in the first place but gunk happens. Link to post Share on other sites More sharing options...
satureyes Posted December 21, 2012 Author Share #7 Â Posted December 21, 2012 Advertisement (gone after registration) God damn - why did I decide to examine the lens with a bloody loupe. I'd be none the wiser. Now it's bugging me. Link to post Share on other sites More sharing options...
kokoshawnuff Posted December 21, 2012 Share #8 Â Posted December 21, 2012 Bubbles used to be quite common and still show up occasionally...even in modern leica glass. Though bubbles don't typically look like "gunk" Link to post Share on other sites More sharing options...
lct Posted December 21, 2012 Share #9 Â Posted December 21, 2012 God damn - why did I decide to examine the lens with a bloody loupe... You did well as those things can impact the resale value of your lens. Link to post Share on other sites More sharing options...
jankap Posted December 21, 2012 Share #10 Â Posted December 21, 2012 You aren't mirroring your own eye? In the centre, Leica quality assurance would have noticed this. Please ask your dealer. Jan Link to post Share on other sites More sharing options...
satureyes Posted December 21, 2012 Author Share #11 Â Posted December 21, 2012 I thought it may be refraction or something - I looked at my other lenses and it's not there- I will have a wander into London when crazy season is over and see what they say! Link to post Share on other sites More sharing options...
pico Posted December 22, 2012 Share #12 Â Posted December 22, 2012 First, smile and be happy that you have a very good lens. Â Leica is accustomed to having some meticulous customers who have questions such as yours, so feel free to contact them, then send in the lens with a description of the problem. Your description here is good. (I'm not sure how gunk will interpret, and IMHO I would spell out Summilux. 'lux is slangish. ) Â I am certain that your concern will be respected and the issue, if there is one, will be remedied. Â (Been there myself!) Link to post Share on other sites More sharing options...
Tonki-M Posted December 22, 2012 Share #13 Â Posted December 22, 2012 indeed this issue was quite common with old lens where the elements will have bubbles or grease smear, etc. much more rare these day. 99% of the time, it isnt going to have any effect on your images, but as above posts said, it WILL affect resale value if and when you decide to part with it. Link to post Share on other sites More sharing options...
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