eBay Sigma 18-200mm BIN £70 or offer
Posted 02/10/2016 - 19:14
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On the photo it looks more like an oil smear. I wouldn't have thought the lens was old enough to suffer with fungus issues yet as it's only been available for seven years (released early 2009.) If it is fungus though a strong dose of sunlight UV might kill it off if it isn't well developed. It looks mint externally and the price at £70 or less seems reasonable. (Why did a 'less than' sign here truncate the post initially??)
The trouble is though that one doesn't want to risk fungus spreading to other lenses.
The trouble is though that one doesn't want to risk fungus spreading to other lenses.
John K
Posted 03/10/2016 - 07:08
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oddly, I've got a copy of the very same lens with the same issue, degredation of the front element. Never been quite sure whether it's fungus or instead a problem with the cementing, but either way replacement glass is NLA for the model according to Sigma.
Posted 03/10/2016 - 10:32
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Rather than replace it, why can't Sigma clean it? Even regrind it if need be.
John K
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