algrove Posted October 3, 2011 Share #1 Posted October 3, 2011 Advertisement (gone after registration) This filter is listed many places, but I never see the diameter mentioned. Since it is a UVa/IR filter, I cannot use it on my M9. But if I knew the diameter then maybe I could find an alternate filter that fits between the lens and hood like the filter #14322 does. Thanks for replies and hoping someone has this filter in their kit. Link to post Share on other sites More sharing options...
Advertisement Posted October 3, 2011 Posted October 3, 2011 Hi algrove, Take a look here Anyone know the diameter of filter #13422 for SEM 18mm?. I'm sure you'll find what you were looking for!
adan Posted October 3, 2011 Share #2 Posted October 3, 2011 It is an exclusive design for M8 use that screws onto the outside of the lens, rather than INTO regular filter threads. There is no other filter like it made by anyone. It is a "backwards" 55mm filter, as thick as two normal filters so that it can clear the deeply curved front lens element. But it can't really be catalogued as a "55mm filter" because it will not fit any normal 55mm-diameter lens - and other E55 filters cannot be used in place of it. 13422 filter Scroll through this review of the 18 SEM.... Leica 18mm f/3.8 ASPH ....for some pix revealing this lens's oddball approach. All the front accessories (lens hood, 77mm filter adapter, IR/UV 14322 filter) screw ONTO the front - a male thread inside that red warning stripe. As I mentioned in your other thread: a 55mm filter, with the glass taken out, and turned around backwards, will screw onto the front of the 18mm. Then another 55mm filter, with glass intact, can be screwed onto that empty filter ring - also backwards. This will likely vignette on the M9 or on film cameras. Note that the 13422 itself will also likely cause vignetting on anything other than the cropped-sensor M8. Otherwise, the only alternative (to avoid the 14322) is to get the Leica adapter for 77mm filters - which are a common size. Link to post Share on other sites More sharing options...
algrove Posted October 4, 2011 Author Share #3 Posted October 4, 2011 Thank you Andy-- I thought somewhere someone complained that a filter once put on that E77 adapter ring creates reflections that bounce back into the lens. If that is correct then your idea is the only one available if I want to protect the front of this lens. And then I cannot use the lens hood! I just find it quite incredible that Leica cannot come up with a UVa filter like the 13422 for this lens in light of all the M9's that have been sold. Like Jaap said, buy the 13422 and trade out the IR glass for whatever I want, but at what a cost!! Link to post Share on other sites More sharing options...
adan Posted October 4, 2011 Share #4 Posted October 4, 2011 I just find it quite incredible that Leica cannot come up with a UVa filter like the 13422 for this lens in light of all the M9's that have been sold. Can't be done. The 13422 "worked" only because the M8 cropped the view of the 18mm down to an effective "24mm." Angle of view of the 18mm on the M8 was 84°. Try to use the 18 with the 13422 (or a UVa equivalent) on an M9 (angle of view 100°), and it will show up in the corners of the pictures. I'd find it "quite incredible" if Leica made a goof like that. The 18mm+13422 filter combo is probably the sole optical unit Leica ever designed strictly for use with a cropped sensor. Equivalent to Canon EF-S or Nikon DX lenses (which won't work on full frame bodies, either). It is a physical limitation of the size of that curved front element, the angle of view the 18 will produce on any Leica EXCEPT an M8 , and the diameter of the front of the lens. In theory, Leica could have designed the 18mm itself to have a flatter front piece of glass, or a wider built-in filter thread (72mm or so). But - well - they didn't. Link to post Share on other sites More sharing options...
lct Posted October 4, 2011 Share #5 Posted October 4, 2011 Why not using the filter holder adapter #14484 if i may ask? Link to post Share on other sites More sharing options...
algrove Posted October 4, 2011 Author Share #6 Posted October 4, 2011 Why not using the filter holder adapter #14484 if i may ask? If you are using one, I'd like to know since I heard that E77 holder with filters gives a back reflectance to images at certain angles. Is that true? Link to post Share on other sites More sharing options...
lct Posted October 4, 2011 Share #7 Posted October 4, 2011 Advertisement (gone after registration) I have no experience with it sorry. Link to post Share on other sites More sharing options...
algrove Posted October 5, 2011 Author Share #8 Posted October 5, 2011 Ordered the E77 holder. Now I have to find a UVa 77 Leica filter to go with it. Anyone know someone who wants to unload one of those filters? Link to post Share on other sites More sharing options...
lct Posted October 5, 2011 Share #9 Posted October 5, 2011 Here, here, here or here ... Link to post Share on other sites More sharing options...
algrove Posted October 6, 2011 Author Share #10 Posted October 6, 2011 Here, here, here or here ... Thank you so much! Link to post Share on other sites More sharing options...
lct Posted October 6, 2011 Share #11 Posted October 6, 2011 My pleasure, Sir! Link to post Share on other sites More sharing options...
algrove Posted November 3, 2011 Author Share #12 Posted November 3, 2011 Well I got the E77 adapter and is it ugly! Also got a Leica UVa 77mm filter, so I am set. The size of this setup makes me want to sell the lens (which I have not yet used) and just keep using my Zeiss 18mm which takes 58mm filters no problem, no vignetting. I just thought my images would be even sharper with the Leica SEM 18. Link to post Share on other sites More sharing options...
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