macusque Posted January 19, 2007 Share #1 Posted January 19, 2007 Advertisement (gone after registration) In search for a solution to mount an IR filter on the 15 CV, I measured the hood’s inner diameter and I realized that maybe a 37mm filter could have been positioned inside the integrated hood, just in front of the frontal element. I ordered a B+W UV/IR-CUT F-PRO 37mm and this week I received it. I "semi-glued" it using a thin layer of black silicone on the filter ring, then gently pressing the filter in front of the lens. The frontal element of the 15 protrudes, so the filter would touch it in the center, but the silicon layer adds just enough space to separate them. Silicone acts like glue but it's easier.. well.. less hard to remove. It's not an "elegant" solution, as if you want to remove the filter you'll end with cleaning the lens from the silicone around the glass, but giving I have only the M8 as rangefinder I don’t need to remove the filter anytime soon. Images of the filter: Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/13918-ir-cut-filter-on-15-voigtlander/?do=findComment&comment=146860'>More sharing options...
macusque Posted January 19, 2007 Author Share #2 Posted January 19, 2007 The filter works correctly in removing the IR frequency, black of the speakers cover is black and blue of the big pillows is correct. There’s the usual drift toward cyan at edges, but curiously not too much, considering the focal lenght. I need to test more but it actually seems to show less than my 21 Elmarit asph. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/13918-ir-cut-filter-on-15-voigtlander/?do=findComment&comment=146865'>More sharing options...
macusque Posted January 19, 2007 Author Share #3 Posted January 19, 2007 There’s no vignetting from the filter, its mount doesn't gets into the framing. This is wide open, showing the natural vignetting of the 15 CV (not too much anyway and it can be eliminated with +25 setting in PS). You can notice also the cyan drift, again not too much evident considering it’s a 15 mm. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/13918-ir-cut-filter-on-15-voigtlander/?do=findComment&comment=146868'>More sharing options...
innerimager Posted January 19, 2007 Share #4 Posted January 19, 2007 neat, but I wonder if I'd want an IR filter on my CV15 as I will be using it for landscape and other outdoor sun lit scenes where IR is a minimal issue. But if I wanted it for tungsten light, I'd try it! best....peter Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted January 19, 2007 Share #5 Posted January 19, 2007 Hmmm pretty neat trick. Now we will never find a 37mm IR filter. LOL Link to post Share on other sites More sharing options...
macusque Posted January 19, 2007 Author Share #6 Posted January 19, 2007 I found that IR filters are needed for outdoor as well, although to a less degree. Infrared light often shifts colors, especially in foliage. Link to post Share on other sites More sharing options...
macusque Posted January 19, 2007 Author Share #7 Posted January 19, 2007 Advertisement (gone after registration) Now we will never find a 37mm IR filter. LOL Right now, 28 available from Oege-Energy store on ebay, about 55 $ plus shipping. Run Guy.. Link to post Share on other sites More sharing options...
marknorton Posted January 19, 2007 Share #8 Posted January 19, 2007 neat, but I wonder if I'd want an IR filter on my CV15 as I will be using it for landscape and other outdoor sun lit scenes where IR is a minimal issue. But if I wanted it for tungsten light, I'd try it! best....peter I agree with Marco, you only have to think of things that show up in IR pictures to know that an IR filter is required most of the time - foliage is the prime example, which will show up in many landscape shots. If you don't think you need an IR filter, you are likely fooling yourself. Neat solution, Marco, and interesting that it doesn't vignette. Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted January 19, 2007 Share #9 Posted January 19, 2007 Well i just ordered one, certainly solves the IR issue with this lens. Adorama i ordered from , hopefully it is in stock Link to post Share on other sites More sharing options...
kidigital Posted January 19, 2007 Share #10 Posted January 19, 2007 Great solution Marco. Thanks for posting. By the way, I really like the image with the buildings on the hill. Kurt Link to post Share on other sites More sharing options...
macusque Posted January 19, 2007 Author Share #11 Posted January 19, 2007 Actually at the bottom of the hill, hidden in the image by more modern buildings, there's a roman amphitheater (Teatro Romano) which is still used as open theater in summer. Just beautiful and it shows how ancient romans put many efforts in the "sound/acoustic department". It's over two thousand years that those stones do their job and they still do it outstandingly well, something we could only dream of in this digital era Link to post Share on other sites More sharing options...
chrism Posted January 19, 2007 Share #12 Posted January 19, 2007 Brilliant! Much more elegant that the filter adaptor suggested at CameraQuest (though a little more permanent!) Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Chris Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Chris ' data-webShareUrl='https://www.l-camera-forum.com/topic/13918-ir-cut-filter-on-15-voigtlander/?do=findComment&comment=146935'>More sharing options...
macusque Posted January 19, 2007 Author Share #13 Posted January 19, 2007 Indeed Chris, I thought about that solution too but I didn't like the idea to permanently attach a big 77mm filter in front of this tiny lens, which is very portable indeed. Also, it costs almost nothing... 37mm filter apart, which is 50 € anyway Link to post Share on other sites More sharing options...
bradreiman Posted January 20, 2007 Share #14 Posted January 20, 2007 god job Marco. Verona is one of my favorite places in Europe. I have worked at the colliseum there and it is a truly fantastic music venue. Keep the images coming...b Link to post Share on other sites More sharing options...
sean_reid Posted January 20, 2007 Share #15 Posted January 20, 2007 Hi Marco, It would be interesting to see what the results would be like if you could hand-code a 9cm Leitz adapter with the 21/2.8 Elm. code and try it with your 15 plus filter. Cheers, Sean Link to post Share on other sites More sharing options...
robsteve Posted January 20, 2007 Share #16 Posted January 20, 2007 I just tried the 39mm 486 filter and it too fits inside the Voitlander 15mm hood. Link to post Share on other sites More sharing options...
tom0511 Posted January 20, 2007 Share #17 Posted January 20, 2007 you could have chosen a silver version of the filter for your silver lens Anyways- thanks and a veryusefull idea, I might very well do the same. tom Link to post Share on other sites More sharing options...
macusque Posted January 20, 2007 Author Share #18 Posted January 20, 2007 The silver version is not F-PRO, I received one last year (labelled "Digital" if I recall well) and IMO it is slightly less effective and it induces a very slight flare in some conditions. The F-PRO instead is perfect from my experience, no more flare or ghosts than with the naked lens. Link to post Share on other sites More sharing options...
macusque Posted January 20, 2007 Author Share #19 Posted January 20, 2007 I just tried the 39mm 486 filter and it too fits inside the Voitlander 15mm hood. Robert, did you manage to mount it without the silicone, maybe using a tape on the ring to make it more tight in place ? That would be an even better solution indeed ! Link to post Share on other sites More sharing options...
macusque Posted January 20, 2007 Author Share #20 Posted January 20, 2007 Hi Marco, It would be interesting to see what the results would be like if you could hand-code a 9cm Leitz adapter with the 21/2.8 Elm. code and try it with your 15 plus filter. Cheers, Sean Hi Sean, with "9cm Leitz adapter" you mean a particular screw - to - M-mount adapter ? I use the one from Voigtlander and indeed it seems too small to accomodate the sharpie method. Maybe the Leitz adapter is wider ? Link to post Share on other sites More sharing options...
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