Archived posting to the Leica Users Group, 2000/07/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The theory is that the acetone (or any heavy duty solvent) would...perhaps...damaged the lens coating and/or creep past the edge of the lens and inflitrate the interior thus melting lens cement, etc.. Many of us are afraid of strong chemicals...or even their vapors...in the vicinity of the cameras-we-could-never-afford-to-replace. I damaged the coating on an expensive ($70) Leitz UV filter once by inadvertantly exposing it to the fumes of dry but apparently uncured ethyl cyanoacrylate cement (i.e., Krazy Glue). Now I won't even breathe on my Summicron unless at least 72 hours have elapsed since my last ingestion of alcohol. - ----- Original Message ----- From: "William Gower" <wgower@eco-tec.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Wednesday, July 05, 2000 10:11 AM Subject: Re: [Leica] Lens Cleaning > Cleaning up my "outbox" and I realised I never sent this: > > Arthur wrote: > > >From: ARTHURWG@aol.com > > > Anyone who would use acetone on a Leica lens should go directly to a > > psychiatrist. A much better alternative would be 180-grit sandpaper. Arthur > > To which, (in good humour) I'll reply with: > > ....anyone who can afford to see a psychiatrist can probably afford to use > Leica equipment. > > > Which begs another question, do you think Freud used a Rollie or a Leica ? > > But seriously, my very judicious use of solvents have not caused any visual > problems. Or at least, has they have not manifested themselves in any > detectable way over the last five years. This goes for my other non-Leica > lenses (non-multicoated Nikkors and Pentax 67's) as well. > > Maybe you were thinking acetone APPLIED with 180 grit sandpaper...? > > Could you or someone elaborate as to why this is a no-no ? I'm all ears. > > Regards > > William >