mrbutterworth Posted December 20, 2004 Share Posted December 20, 2004 Just got this lens used today, and it appears to have something on one of the inner elements. Is it possibly fungus? <p> Thanks, Nick<div></div> Link to comment Share on other sites More sharing options...
lee hamiel Posted December 20, 2004 Share Posted December 20, 2004 I'm sorry as I don't know - looks more like Mars to me - Did you buy the lens knowing there were problems? Link to comment Share on other sites More sharing options...
john_shriver Posted December 20, 2004 Share Posted December 20, 2004 Looks more like plain old dirt, or perhaps separation of a cemented group. Hard to tell, but it's a hard thing to take a picture of, especially with the typical AF digital P&S. Link to comment Share on other sites More sharing options...
jorge Posted December 20, 2004 Share Posted December 20, 2004 Nick, Most probably not fungus; fungi look like cobwebs. As said before, looks like a pair of elements that are decementing. It's too large to be dust, not a coating problem either, those usually have larger irregular patches. Decemented elements can some times be fixed by a specialist but the cost is generally in excess of the lens value, unless it's something very special. Link to comment Share on other sites More sharing options...
mike_elek Posted December 20, 2004 Share Posted December 20, 2004 Looks like possibly a smudge, possibly grease spot or something? Really hard to say. How did the seller describe it? Link to comment Share on other sites More sharing options...
stephen_w. Posted December 20, 2004 Share Posted December 20, 2004 Nah, the source of light is the reason for the white area shown. It looks normal to me when one uses a strong light (Xenon and others) through even a new lens. Why not just shoot a roll and see compared to what you already have? Link to comment Share on other sites More sharing options...
mrbutterworth Posted December 20, 2004 Author Share Posted December 20, 2004 It is quite distinct to the naked eye, but is really hard to capture with the digicam that I am using. It is only in the spot that I have the arrow pointing to, the rest of the lens looks totally normal. Maybe I will try to get a better shot of it... <p> Nick Link to comment Share on other sites More sharing options...
dan flanders Posted December 20, 2004 Share Posted December 20, 2004 I would be willing to bet it is inconsequential. I have a Leica Sonnar with a chip the size of a pinhead out of the center of the front element and it cannot be distinguished in any picture. I would venture that it is a bubble and bubbles are no import to lenses. Take a picture and see what comes out. Good luck! Link to comment Share on other sites More sharing options...
stephen_w. Posted December 21, 2004 Share Posted December 21, 2004 Harry, I agree. There are many factors which affect picture quality. It's best not to worry about some lens "defects". Link to comment Share on other sites More sharing options...
ben z Posted December 21, 2004 Share Posted December 21, 2004 =I waited a few minutes for the picture to appear (I am on a dial-up connection at present) and holy cow! I don't know what the thing by the arrow is but it looks to be the least of the problems compared to the rest of it. Looks like a cauldron of boiling oil! Link to comment Share on other sites More sharing options...
andy m. Posted December 21, 2004 Share Posted December 21, 2004 It needs a clean- most of that is just dust. If it is fungus (unlikely) the tech. can deal with that too. Link to comment Share on other sites More sharing options...
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