Archived posting to the Leica Users Group, 2006/10/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks Marc, it's a fascinating historical area. Cheers Hoppy 1955 model -----Original Message----- From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On Behalf Of Marc James Small Sent: Friday, 27 October 2006 14:21 To: Leica Users Group; 'Leica Users Group' Subject: RE: [Leica] How much for a Nocti At 11:38 PM 10/26/2006, G Hopkinson wrote: >Henning and Mark, I really respect the opinions >and experience of the pro shooters here and I know we've had a thread on >this >before. Probably like religion or politics no >one will ever change anyone else's mind on this. >In your experience then, you consider that there >is a demonstrable loss of image quality as a result of having a (high >quality) >filter fitted? Or you just don't think that it >is worth the effort or expense to fit the >filter? Yes I understand that modern Leica >lens coatings are reportedly tough. Those of >older lenses are evidently less so. We have all >seen many ads that begin "usual wipe >marks on front element" or similar. Hoppy Leitz was forbidden to use the Smakula vacuum coating technology owned by Zeiss until 1960, so they were forced to use a drip-coating method in the interim which often caused the coating to be soft and evanescent. After 1960, all Leitz/Leica coatings are really hard. There is a good book which you might want to acquire, entitled NON-LEITZ LEICA THREAD-MOUNT LENSES: A 39mm DIVERSITY, as this matter is discussed there. The book is MOST highly recommended -- for that matter, Jeffrey Smith needs to get a copy also, to see all the 5cm/50mm lenses which are missing from his arsenal. Marc msmall@aya.yale.edu Cha robh b?s fir gun ghr?s fir! _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information