Question about Sigma 400mm f/5.6 APO Macro for Nikon AI
Hello i need instructions on how to disassemble this lens so i can clean fungus inside the elements
Sigma will not repair this lens as the fungs may be in the lens on the barrels and if thay could clean
or replace optics the fungs may come back so thay cannot give a guarantee I know someone who
cleans lenses let me know if you want to contack him
Posted on Nov 06, 2008
Generally speaking, those puppies are assembled so no ordinary man can find his way in. Your best bet is to send it into Sigma, or drop it by a camera store, or put up a post on craigslist.org - You'll be better off in the long run knowing that there will be no damage to your internal elements. A single mishap can mean goodbye beautiful prime - the elements are coated with certain substances that are crucial in the lens's disbursement of light - removal of these coatings is a baaaad idea.
Posted on Apr 08, 2008
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Posted on Jan 02, 2017
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