Guest guy_mancuso Posted March 24, 2007 Share #21 Â Posted March 24, 2007 Advertisement (gone after registration) FYI also I have a 60mm taped inside the 67 filter frame for my temp fix and i am not vignetting, so I am questioning the 67 size to begin with Link to post Share on other sites More sharing options...
Advertisement Posted March 24, 2007 Posted March 24, 2007 Hi Guest guy_mancuso, Take a look here Need help on WATE. I'm sure you'll find what you were looking for!
marknorton Posted March 24, 2007 Share #22  Posted March 24, 2007 Guy, Mark; I could make these for you next week. the only thing holding me back is I don't have a WATE in my hands (yet). if you get hung up with Mark's supplier, let me know.  John  My starting point is a hollow cylinder, OD 53.3mm ID 46.8mm Length 12.2mm narrowing to ID 43.8mm length 0.2mm. The filter glass is glued behind this narrowing or, more expensively, by a retaining ring screwed in from the back. This is to keep the filter no more than 1mm in front of the front lens element at its furthest position forwards.  There are then two threads to cut - on the front, the same male thread as the WATE with thread stop and o-ring recess at the filter end and the same female thread as on the hood and filter holder on the other end again with thread stop and o-ring recess. The threads are 50mm, pitch 1mm.  The two threads - front and back - have to be aligned so that when the adapter is screwed on to the lens and the standard lens hood is screwed on to the adapter and both are against their respective thread stops, the hood is square with the sensor. Link to post Share on other sites More sharing options...
marknorton Posted March 24, 2007 Share #23  Posted March 24, 2007 FYI also I have a 60mm taped inside the 67 filter frame for my temp fix and i am not vignetting, so I am questioning the 67 size to begin with  Guy, the 67mm filter is required for FF. Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #24 Â Posted March 24, 2007 Dah, what was i thinking. See after 3 years of crop factor camera's you forget about FF Â Why they did not make the same filter holder in a M8 form factor is beyond me. We could have bought one for the M8 instead. Link to post Share on other sites More sharing options...
jlm Posted March 24, 2007 Share #25 Â Posted March 24, 2007 I would still need a lens to check fit, but like this? leica-wate.pdf Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #26 Â Posted March 24, 2007 John i can get the WATE to you, how long would you need it. Mark does this sound correct. I'm having a hard time visualizing the PDF. John basically i think itis like a extention tube from the lens out past the 16mm setting which Mark knows that and on the inside a slot for a filter than you have the same 50mm thread on the outside to replace the hood. If your going with Marks design which i think is the best yet. I will let him confirm that but I can ship my WATE for a couple days or pull a favor from Leica and have one shipped to you Link to post Share on other sites More sharing options...
jlm Posted March 24, 2007 Share #27 Â Posted March 24, 2007 Advertisement (gone after registration) i would need it for two days, starting wednesday, next week. Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #28 Â Posted March 24, 2007 So April 4th is that correct. i have a job the 5th and 6th but the WATE is not really needed. This week coming the 28th and 29th I am good. Let me know Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #29 Â Posted March 24, 2007 John looking at that again it looks good the only issue I see is the size of the glass we need to mount on the inside. If we take a standard 52 IR filter and take the glass out that would be the size we need to fit in there. I think Mark mentioned that is actually 49.5 mm . I have one here in 52mm but not apart so I don't know that actual size. What the end user will need is a O ring for the Hood side and the proper glue to mount the glass on the inside of the tube. Link to post Share on other sites More sharing options...
jlm Posted March 24, 2007 Share #30 Â Posted March 24, 2007 Guy...you are on warp time! Â next wednesday is Mar. 28. i would need the lens and hopefully the hood. if you can send me the filter, I can size the opening for that glass, otherwise, I will need the exact ID dimension. i will dig up O-rings. Â jm@milich.com Link to post Share on other sites More sharing options...
marknorton Posted March 24, 2007 Share #31 Â Posted March 24, 2007 Yes, looks good, the thickness all depends on how you plan to mount the filter. Â Some additional info for you... Â The outside diameter matches that of the aperture ring, the inside diameter is the diameter of the hole in the filter holder which in turn is the diameter of the ring with the lens ID surrounding the front lens element. Â The threads are 5mm long front and back and the front lens element extends 9.5 - 10mm in front of the rear edge. Â Originally, I had thought to use the glass out of a 52mm filter, diameter 48.9mm, but it's too big, so I dropped back to 49mm. Ideally, it would take a 46mm filter screwed into an internal thread but I think might then vignette, would be worth trying though. Using the filter glass by itself allows you to use a larger filter glass, get it close to the front element and keep the aperture as open as possible. Â The o-ring is 45mm OD, 1mm thick, slightly stretched around the thread. Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #32  Posted March 24, 2007 Guy...you are on warp time! next wednesday is Mar. 28. i would need the lens and hopefully the hood. if you can send me the filter, I can size the opening for that glass, otherwise, I will need the exact ID dimension. i will dig up O-rings.  jm@milich.com   John your on I can have it there Wednesday and maybe Fed x back for Friday. Just need info and stuff > I will ship lens hood , filter adapter and a 52 IR filter. I can test it all when it gets back and post the results be prepared to make a lot of these and get a paypal account handy , you just went into the filter adapter business. ROTFLMAO  I'll let you and Mark work out the business arrangements. LOL Just kidding,  Seriously though i can present this to leica if you guys want or do this yourselves. i just want a adapter and help everyone here.   I only have a 52 filter on hand. Don't tell me i need to buy another freaking filter. LOL Link to post Share on other sites More sharing options...
marknorton Posted March 24, 2007 Share #33 Â Posted March 24, 2007 Don't worry about me, if John can make these, all well and good! Â The glass out of a 52mm filter will fit in the back of the lens hood but it will sit at an angle because of the surface it rests against. Better to use a smaller filter than can be mounted on a machined plane parallel to the sensor. Link to post Share on other sites More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #34  Posted March 24, 2007 Pardon the chicken scratch here but this is what i am seeing . So not sure how the hood would affect the glass alignment 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/19614-need-help-on-wate/?do=findComment&comment=211208'>More sharing options...
Guest guy_mancuso Posted March 24, 2007 Share #35 Â Posted March 24, 2007 So the glass gets mounted from the back of the adapter but the barrell just needs to be big enough for the filter in it than wrap back to the 50mm threads for the hood. hope that made sense. What we need to decide so we don't need special IR sizes is use a 52mm or 49mm filter with its mount. so folks can just buy either a 49 or 52 and take the glass out and install it Link to post Share on other sites More sharing options...
jlm Posted March 24, 2007 Share #36  Posted March 24, 2007 untill i have them in me mitts, I can't be sure. as the thread length grows, the adapter gets thicker. the glass thickness will be also a factor (I took apart a 52mm UV filter and that glass was 2.5mm thick) if the glass gets smaller in dia. and moves away from the lens, vignetting may occur.  it looks like the 49mm glass might be best  guy: e-mail me for the shipping info.  jm Link to post Share on other sites More sharing options...
robsteve Posted March 24, 2007 Share #37  Posted March 24, 2007 John The two threads - front and back - have to be aligned so that when the adapter is screwed on to the lens and the standard lens hood is screwed on to the adapter and both are against their respective thread stops, the hood is square with the sensor.  This is probably the toughest thing to achieve without having a lens to measure. Link to post Share on other sites More sharing options...
robsteve Posted March 24, 2007 Share #38  Posted March 24, 2007 What we need to decide so we don't need special IR sizes is use a 52mm or 49mm filter with its mount. so folks can just buy either a 49 or 52 and take the glass out and install it  Keep in mind that the glass sizes may be different between the Leica UV/IR filters and the B+W UV/IR filters.  If you threaded the inside of the adapter with the same thread size as the locking ring on the donar filter, you could just use the locking ring from the filter to install the glass. Link to post Share on other sites More sharing options...
stephengilbert Posted March 24, 2007 Share #39 Â Posted March 24, 2007 Re Guy's chicken scratch: couldn't the filter glass be held in with a screw-on ring as the glass is held in the normal B&W filters. I took apart a B&W slim filter and the retaining ring is very thin. If the inner measurement of the cylinder where the glass fits were the same dimension as a filter, it would not only accept an unmodified piece of glass, but could be threaded so that the glass is held in with a retaining ring. No glue, and the glass can be easily replaced if damaged. Â Steve Link to post Share on other sites More sharing options...
marknorton Posted March 24, 2007 Share #40  Posted March 24, 2007 Pardon the chicken scratch here but this is what i am seeing . So not sure how the hood would affect the glass alignment  Guy, there is no problem where the filter is located in your drawing; it is square to the sensor but is limited in size by the size of the adapter. The problem comes if you want to use the glass out of a 52mm filter; it's too big to fit in the position shown but can fit inside the lens hood but that will interfere with the lens hood thread/seating.  I decided it's better to let the hood screw on to the front of the adapter and fit a slightly smaller filter inside the adapter. Provided you can maximise the aperture through the filter and place it close to the front lens element, it should be OK.  I'm quite sure John will come up with the best solution once he receives your lens. Link to post Share on other sites More sharing options...
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