Archived posting to the Leica Users Group, 1999/08/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Can someone tell me why they can't make eyeglass lens out of sapphire. I have a Cyma watch with a sapphire crystal and in two years of hard wear NO scratches. But I too will kill my eyeglasses in 3-6 mnts. Cheers Wilber Tim Atherton wrote: > Oh yeah as well!! > > How come my expensive Nikon (okay, I Know - they should be Leitz) plastic, > coated, anti-reflective , supposedly scratch resistant lenses are ALWAYS > scratched after 6 months or so? They are lovely when new, but.... > > And these have the best record of any so called scratch resistant lenses I > have used over the past 10 years or so. > > No, I wouldn't go back to glass, but plastic sure does scratch. > > Tim A > > > -----Original Message----- > > From: owner-leica-users@mejac.palo-alto.ca.us > > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Steve > > LeHuray > > Sent: August 14, 1999 3:20 PM > > To: leica-users@mejac.palo-alto.ca.us > > Subject: Re: [Leica] m2 > > > > > > To Marc and Mark, > > Some things die hard don't they? There is nothing wrong with plastic > > eyeglass lenses. Why would anybody want to walk around with twice the wait > > sitting on their nose. I know that both of you won't beleive it > > but they DO > > NOT scratch. Oh, maybe if you take a scew driver and drag it > > across the lens > > but the gentle rubbing against a brass viewfinder will leave nary a mark > > (oops) scratch. > > Steve > > Annapolis > > ---------- > > >From: Mark Rabiner <mrabiner@concentric.net> > > >To: leica-users@mejac.palo-alto.ca.us > > >Subject: Re: [Leica] m2 > > >Date: Sat, Aug 14, 1999, 4:34 PM > > > > > > > >Marc James Small wrote: > > >> > > >> At 08:51 AM 8/14/1999 -0500, Alan Brown wrote: > > >> >Or is there another option to > > >> >keeping my glasses from getting scratched? > > >> > > > >> > > >> Glass lenses. Avoid plastic lenses at all costs -- even the new > > >> "Scratch-Proof" plastics cannot compete with glass. > > >> > > >> Besides, most glass lenses are made by Corning or Zeiss, I believe. > > >> Rodenstock is a big player in plastic lenses, but I am not > > certain who else > > >> makes them. > > >> > > >> Marc > > >> > > >> msmall@roanoke.infi.net FAX: +540/343-7315 > > >> Cha robh bas fir gun ghras fir! > > > > > >We had a fellow on the list by the name of Zeissler (Mitch?) who > > told me he had > > >Zeiss glass put in his frames. > > >Impressed the heck out of me but as I thought they were more > > hard to get. > > >When I go to the glasses store I say "No I'm a photographer" > > when they try to > > >sell me on plastic. > > >I explain to them that us photographers are very aware of the differences > > >between plastic and glass and would not dream of looking through > > plastic all > > >day. That never works. > > >So I tell them I am very hard on my lenses. That doesn't work > > either. So I tell > > >them to just give me the damn glass anyway I don't care if you > > have to go to > > >some weird lab you have less of a great deal going with. > > >Mark Rabiner > > > > >