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02-23-2011, 10:22 PM   #1
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DA 40mm F2.8 Limited Disassembly/cleaning?

Hi everyone.

Just snagged this lens on ebay and got a fantastic deal for one reason. There is a tiny speck of fungus on the rear of the front element.

From what I can tell, the fungus doesn't appear to have damaged the coating yet, so it should be pretty easy to remove with naptha or peroxide, but it would necessitate the removal of the element.

I'm pretty mechanically adept and have disassembled and reassembled manual lenses before with no problem, but I've never taken apart a pancake and am a little leery of taking on an AF lens.

Has anyone disassembled this lens yet, and if so, is the front element accessible from the front, or am I going to do a complete teardown to get to the fungus?

Alternately, does anyone know a good, affordable shop where I can send it to get it cleaned for a reasonable price? All of the shops around here (Washington D.C.) seem to subcontract to one outfit (Strauss), who is known for rather shoddy and expensive work.

02-27-2011, 02:44 AM   #2
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I've heard a lot of good things said about KEH.com. I've never used their repair services, but often see them recommended. I have bought lenses from them, and they are a great company to deal with.
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