andreas.hermann Posted October 29, 2009 Share #1 Posted October 29, 2009 Advertisement (gone after registration) I coded my CV 12 mm as a WATE, using an adapter from John Milich and my rangefinder-coupled CV 15 mm as WATE, using the M-mount, which came with the lens. Switching the lens detection 'on', the camera does not recognize the lenses - switching the lens detection 'on with UV/IR', the camera recognizes and the pop up menu asks to specify 16 18 or 21 mm. (My M8's firmware is updated to 2.004 and does not have any problems to detect my other Leica-lenses.) Any suggestions to solve this problem? Link to post Share on other sites More sharing options...
Advertisement Posted October 29, 2009 Posted October 29, 2009 Hi andreas.hermann, Take a look here coding CV 12 and CV 15 as WATE. I'm sure you'll find what you were looking for!
epand56 Posted October 29, 2009 Share #2 Posted October 29, 2009 Andreas, I think the only way you have to make the CV 12 working is to buy a John Milich filter holder and buy a B+W 489 (not 486) filter. This works perfectly for me. Thw CV 15 instead is perfectly codable as a WATE and anybody suggest to use it as a 16. Here you are 2 examples; first one is the 12 with the B+W 489 filter, and the second is the 15 coded as WATE and set to 16. Link to post Share on other sites More sharing options...
vanhulsenbeek Posted October 29, 2009 Share #3 Posted October 29, 2009 ............ Switching the lens detection 'on', the camera does not recognize the lenses - switching the lens detection 'on with UV/IR', the camera recognizes and the pop up menu asks to specify 16 18 or 21 mm.................. That sounds right. I think mere lens detection (at 18mm) does not work for the WATE, as it serves no purpose without choosing between 16,18 or 21mm. Your lens plus coding is fine. Link to post Share on other sites More sharing options...
johnalex141r Posted October 29, 2009 Share #4 Posted October 29, 2009 That sounds right. I think mere lens detection (at 18mm) does not work for the WATE, as it serves no purpose without choosing between 16,18 or 21mm. Your lens plus coding is fine. Yes, there was a pdf on the leica site describing how to use the WATE with the M8; you need the "on + UV/IR" setting; just "on" is not good enough. You can ignore the menu and just shoot, if you want. Most of the time that's what I end up doing with my CV15; I try to never "chimp", so most of the time I don't notice the pop-up window mesage. JohnS. Link to post Share on other sites More sharing options...
andreas.hermann Posted November 1, 2009 Author Share #5 Posted November 1, 2009 thanks a lot for your input, very helpful - just one question more: Enrico you mentioned to use B+W 489 instead of B+W 486 - where are the differences between the two (Sean Reid was using for his reviews the 486) ? Link to post Share on other sites More sharing options...
epand56 Posted November 1, 2009 Share #6 Posted November 1, 2009 Andreas, I've been told about the 489 by Maurizio, a friend and forum member quite skilled in the matter. When I bought the CV12, he told me that was not possible to code it but that with the John Milich filter holder and the B+W 489 filter all the problems with vignetting and cyan drift woud be solved. So I bought them and in fact, the lens behave very well. The 489 is not a UV/IR but is an Infrared-Blocking filter. Don't ask me why it works, but it gives the pictures made with the CV 12 a great look. The only thing I've noticed is the filter render the colors a little less saturated than usual, that is something I like. If you want to use the CV 12, then I tell you go for this combination. By the way, this is from the B+W brochure (Arab to me :-): B+W Infrared-Blocking Filter 489 This IR-blocking filter must not be confused with heat-resisting protection filters for projectors or spotlights. Instead, it is intended for use as protec- tion for IR-sensitive CCD sensors or in the light path of illumination devices with low thermal characteris- tics. It suppresses infrared radiation ≥780 nm. Be- cause it gradually begins to absorb infrared radiation at 600 nm, long-wave red light is slightly weakened, so that this filter has a subtle green tint. But in CCD applications, this can be readily corrected electroni- cally. Its filter factor is approximately ¡.2. Link to post Share on other sites More sharing options...
carstenw Posted November 1, 2009 Share #7 Posted November 1, 2009 Advertisement (gone after registration) The 486 works by having many layers of coating, of a thickness close/equal to the IR wavelength, which thus cannot get through the filter. This works perfectly when the light rays going through the lens impinge relatively perpendicularly. When they come at a strong angle, the thickness of the layers is slightly larger, and there is a colour shift, seen in the M8 as the cyan corners. The M8 corrects for this with Leica filters on coded lenses. The 489 is IR-absorbing, and doesn't have the same angle-dependent layers, but the effect is weaker, and more even for different focal lengths. I believe that this is what the M9 has on its sensor, but perhaps someone else can confirm. These filters cannot have the same hard cut-off in the wavelength of the light, and so they take a little visible light, or let a little IR through, due to the gradual falloff of the effect. They have a filter factor, i.e. you have to increase the exposure slightly compared to the 486. Link to post Share on other sites More sharing options...
ho_co Posted November 2, 2009 Share #8 Posted November 2, 2009 Andreas, I concur with Carsten and Enrico. I've had good results with an uncoded Heliar 12 mm on the M8 with the 489 filter, and LENS ID set to OFF. I haven't tried it on an M9. Link to post Share on other sites More sharing options...
epand56 Posted November 2, 2009 Share #9 Posted November 2, 2009 Just one thought more. Don't know how many people here agree with this, but the CV12 gives much better results than the CV 15 IMO. Having both, the only plus I can see on the new M-mount CV 15 is the rangefinder coupling feature thus the ability of focus the lens, but in the end I like most the pictures coming out from my CV 12 Link to post Share on other sites More sharing options...
andreas.hermann Posted November 3, 2009 Author Share #10 Posted November 3, 2009 Sounds great - thanks a lot you all for your very helpful inputs. Best regards, Andreas Link to post Share on other sites More sharing options...
Guest EarlBurrellPhoto Posted November 3, 2009 Share #11 Posted November 3, 2009 The 12mm is already slow enough without a filter factor, so the 489 is a no-go for me. I use the 12mm with a Heliopan IR-cut, and then run the files through Cornerfix. I have my 12mm coded as a 135mm Elmarit (a lens I do not own), which receives no in-camera optical correction whatsoever but does give the files an EXIF i.d. I can use to quickly find and isolate the 12mm shots for Cornerfixing in one swipe. Link to post Share on other sites More sharing options...
robola Posted November 3, 2009 Share #12 Posted November 3, 2009 I had assumed I would buy the new rf coupled cv 15 and subsequently have some questions, the answers to which likely exist in the forum. However, if anyone can respond knowledgeably it would save me a lot of searching and sifting. What is the optimal lens/focal length to code this lens? What is the best way to code it ? Can one purchase a Milich adapter or should the lens be sent to an appropriate place to have the code machined into the mounting flange?---if so where? I'm also curious about Enrico's comments about the cv 12 perhaps producing better iq? Has anyone else observed this? How useful is the cv 21 external finder vs. using (guesstimating) fov from in camera frame lines? Thanks in advance for your patience and responses. Link to post Share on other sites More sharing options...
Big T Posted November 4, 2009 Share #13 Posted November 4, 2009 Robola I have the CV 15mm and love this lens. I have it set up as follows: Coded as a 21mm f2.8 Elmar-M Non ASPH (Works an absolute treat) The lens on my M8.2 brings up the 28/90 frame lines. And in the EXIF it shows 21mm f2.8 (as per the coding). The 15mm focuses through the rangefinder beautifully. So yes all focusing is done through the camera. Use the Voigtlander 21mm View finder which is almost spot on with the view Basically with the 15mm (with 486 UV/IR filter attached) coded as the 21mm the DNGs are used as is. I don't need to apply any corrections (vignetting, etc.) to the DNGs out of camera pics. As for any in camera processing. I believe that the M8.2 thinks it has the 21mm f2.8 with 486 UV/IR filter attached and processes the images accordingly. I have Lens Detection turned "On+UV/IR" in the menu. Hope that helps a bit....... Link to post Share on other sites More sharing options...
ho_co Posted November 4, 2009 Share #14 Posted November 4, 2009 ... I have my 12mm coded as a 135mm Elmarit (a lens I do not own), which receives no in-camera optical correction whatsoever but does give the files an EXIF i.d. I can use to quickly find and isolate the 12mm shots for Cornerfixing in one swipe. Earl, that's positively brilliant! I would never have thought of something so 'out-of-the-box'! Link to post Share on other sites More sharing options...
epand56 Posted November 4, 2009 Share #15 Posted November 4, 2009 Robola, I was used to code my new CV 15 as Big T says, but after getting some strongly cyan shifted pictures in strong sun light with that code, I've decide to follow the stream and code it as a WATE where according with the need I can choose between 16, 18 or 21. This way I've got the best results. Link to post Share on other sites More sharing options...
rpfoto Posted November 11, 2009 Share #16 Posted November 11, 2009 i have been using the cv 15 uncoded with an ir filter and lens id off with very good results. i put shots done with it in a book that can be seen at this link: S O U L S OF T H E C i t y | By R o b e r t P r e s u t t i | Category: Fine Art Photography | Blurb robert ROBERTPRESUTTI.COM Link to post Share on other sites More sharing options...
epand56 Posted November 11, 2009 Share #17 Posted November 11, 2009 Robert, your book made me strongly feel like mounting my Heliar 15 on the M8 and going around town. From your pictures comes out a very versatile and trusty lens, almost good for any situation, not too wide and without distortions. Compliment for the pictures. Link to post Share on other sites More sharing options...
rpfoto Posted November 11, 2009 Share #18 Posted November 11, 2009 Enrico, thank you for the comments about the book, I hadnt really done much street photography until I bought the m8 2 years ago and although I love my 28 and 35 summicron I also have gotten great results both with the 15 and 21 vc, especially the 15 is a gem for the price. robert ---------------------------------------------------------------- ROBERTPRESUTTI.COM Link to post Share on other sites More sharing options...
rpfoto Posted November 11, 2009 Share #19 Posted November 11, 2009 forgot to mention I love the quality in your sample above, hard to believe it was done with a $400 lens robert ----------------------------------------------------------------------- ROBERTPRESUTTI.COM Link to post Share on other sites More sharing options...
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