leica dream Posted November 26, 2017 Share #1 Posted November 26, 2017 Advertisement (gone after registration) What is the latest thinking about whether an R series Sumicron 50mm F2 lens should, or should not, have a UV filter please? Quote Link to post Share on other sites More sharing options...
Advertisement Posted November 26, 2017 Posted November 26, 2017 Hi leica dream, Take a look here UV filter or not on R series. I'm sure you'll find what you were looking for!
Shac Posted November 26, 2017 Share #2 Posted November 26, 2017 (edited) In the 1950's Leitz developed a replacement lens cement that absorbs UV - I believe it's called Absorban. Any lens (e.g. the 2nd version 90 elmarit) without cemented elements wonl;t have absorban but Leica takes other measures to absorb UV (see Putz's Leica lens compendium) The usual argument for filters is to protect the lens and/or reduce the possibility of cleaning marks. The front element of the current 50mm Sumicron R is deeply recessed - also the coatings are hard. Personally I never use them unless I'm in a lens-hostile environment (e.e.g sea-spray, flying grit, etc.) The choice is yours of course. Hope this is of some use Edited November 26, 2017 by Shac 1 Quote Link to post Share on other sites More sharing options...
jaapv Posted November 26, 2017 Share #3 Posted November 26, 2017 Not to filter UV, at any rate... Quote Link to post Share on other sites More sharing options...
masjah Posted November 27, 2017 Share #4 Posted November 27, 2017 Yes, it's purely a matter of how cautious a person you are, and if so whether you think the added protection of a filter is worthwhile. Personally I've got a filter on all of my lenses except my 28/2.8 PC Super Angulon, but that's just me. Quote Link to post Share on other sites More sharing options...
jaapv Posted November 27, 2017 Share #5 Posted November 27, 2017 For protection I use protective (B+W 007) filters. Stronger, thinner, fewer aberrations, easy to keep clean. Quote Link to post Share on other sites More sharing options...
pgk Posted November 27, 2017 Share #6 Posted November 27, 2017 For protection I use protective (B+W 007) filters. Stronger, thinner, fewer aberrations, easy to keep clean. Whenever I have dust, fingermarks, raindrops or whatever on a filter, I never seem to have a blower brush or lens cleaning cloth with me so I end up wiping it with a shirtsleeve or part of whatever fleece I'm wearing. Bad practice I know but ..... well filters are easily replaceable, front elements rather less so. Quote Link to post Share on other sites More sharing options...
jaapv Posted November 27, 2017 Share #7 Posted November 27, 2017 Advertisement (gone after registration) Yep, I share that technique - but with these nano-coated filters fingerprints and dust virtually fall off by themselves. A quick wipe with just about anything - and sparkling clean. 1 Quote Link to post Share on other sites More sharing options...
jankap Posted November 27, 2017 Share #8 Posted November 27, 2017 What is the resale value of a Summicron R? A good filter costs around 70 Euro. A repair perhaps 600 Euros. By the way I wear no glasses. Shouldn't I wear zero glasses to protect my eyes? An Elmarit 280mm 2.8 has a gigantic filter outside and a small filter inside. Both filters bounce the light to each other, the flat sensor plays its role too, so there are plenty reflections possible. I have put the outside filter into my cupboard. Never had a front lens smashed since 1957. Jan 60 years Leica, I realize now. Quote Link to post Share on other sites More sharing options...
pgk Posted November 27, 2017 Share #9 Posted November 27, 2017 Yep, I share that technique - but with these nano-coated filters fingerprints and dust virtually fall off by themselves. A quick wipe with just about anything - and sparkling clean. Unfortunately I must be heavier handed - I have a few well marked filters and whilst it may be heinous to say it, despite their marks I don't think that they have much effect on image quality ..... Quote Link to post Share on other sites More sharing options...
leica dream Posted November 27, 2017 Author Share #10 Posted November 27, 2017 Thank you for that, guys, I thought it would be a pretty consistent reply. B&W ordered. Quote Link to post Share on other sites More sharing options...
pridbor Posted December 16, 2017 Share #11 Posted December 16, 2017 It may be a dumb question but how do I find out which size filter for which lens? Quote Link to post Share on other sites More sharing options...
spydrxx Posted December 16, 2017 Share #12 Posted December 16, 2017 Read the lens specs...they invariably show the filter size. There are also numerous sites on the web indicating the proper filter size for a specific lens. The trick with R lenses is to make sure you know which version of a lens you are dealing with, as some change filter sizes as well as other design changes. 1 Quote Link to post Share on other sites More sharing options...
jankap Posted December 20, 2017 Share #13 Posted December 20, 2017 I would look in Leica Wiki (eng). to find technical data. Jan Quote Link to post Share on other sites More sharing options...
albertknappmd Posted December 22, 2017 Share #14 Posted December 22, 2017 It is always better to have a filter that protects your front element. The Nano B+W with MRC are the best. Albert Quote Link to post Share on other sites More sharing options...
Michiel Fokkema Posted December 22, 2017 Share #15 Posted December 22, 2017 Never a filter for me, but always a lenshood! Quote Link to post Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.