Archived posting to the Leica Users Group, 2009/03/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Lluis- This appears to still be correct: Harrison and Harrison 1835 Thunderbolt Drive, Unit E Porterville, CA 93257 559 782 0121 HarrisonOP at aol.com Marty On Fri, Mar 27, 2009 at 6:36 AM, Lluis Ripoll <luisripoll at telefonica.net>wrote: > Hi Marc, > > If you can give me the address of Harrison & Harrison I would ask them for > filters for my Cooke Amotal lens, > > Thank you very much, > > Saludos cordiales > Lluis > > El 26/03/2009, a las 9:18, Marc James Small escribi?: > > > At 03:30 AM 3/26/2009, Marty Deveney wrote: >> >Of relevance to this thread is that a UV/IR filter is something that >> >Harrison & Harrison don't make. It is a filter which removes, by optical >> >interference, ultra-violet and infrared light but allows the passage of >> >visible light. Infrared causes colour contamination with the Leica M8 >> when >> >it comprises a large proportion of the reflected light from a subject. >> > >> >Harrison and Harrison, unlike, say, Holland and Holland, my favourite >> "H&H" >> >company, also don't appear to have a web presence, which makes them much >> >harder to access outside the US. But I do remember that they are located >> on >> >"Thunderbolt Drive", someplace in the US, which I thought was a very >> >excellent name for a street. >> > >> >In 1999 I ordered some filters from them and when they arrived (in >> Prague, >> >after a lengthy transit) I found that they were uncoated. They might be >> >flat, but without good multicoating, a filter is just an optical >> millstone >> >around the neck of the kind of modern lenses, which all have excellent >> >multicoating, that I use. Maybe they are coated now or maybe I ordered >> from >> >the wrong range, but I didn't go back. >> > >> >If it can't be a leica UV/IR filter, I like the B+W MRC and the Heliopan >> >SH-PMC filters. >> >> Yet again, I have no clue as to what a UV/IR Filter might be but, then, I >> very rarely use filters. And I am digitally inept, so what do I know? >> >> Marty, I thought I had trained you better. "Coating" on filters is a bit >> of a bogus item. Coating on lenses is something which the use of a lens >> hood equals in almost every case. Do not buy into the 1939 Carl Zeiss >> Jena >> hype about its benefits. There are benefits to coatings but not to the >> extent promised by the manufacturers. A proper lens hood is a better >> answer >> in most cases. >> >> Harrison and Harrison possibly does not have a web site. I had thought >> they did. I can generate a telephone number for those interested. >> >> Snobs need not apply. H&H is a very elderly firm with a history of doing >> things correctly. >> >> Again, I have no idea of the significance of this IR/UV filter. Must be >> some sort of digital fixation. That was NOT the start of the thread, as >> it >> began by speaking in general terms of Series filters for the pre-Asph >> 1.4/35 >> Summilux. >> >> Marc >> >> >> msmall at 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 >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >