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chuck colburn

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Everything posted by chuck colburn

  1. Oily iris leaves are not normal for ANY lens. If the lubricant begins to dry up or is cold enough the individual leaves can stick to each other and can result in them kinking up and the destruction of the whole assembly. I highly recommend that you have the lens serviced as some lenses have no parts availble for them and would require parts from another lens for repair. Chuck
  2. Absolutly right. Always been a favorite of mine. Needs no battery and serves both as an incident and reflected light reading unit.
  3. Uhh Nick, I think you have to take into account the film speed (ASA) somewhere in there. Oh yeah and the shutter speed too.
  4. I remember those 115v units . I think they came with a transformer box. Like this unit. http://cgi.ebay.com/Arri-Sync-motor-for-16...1QQcmdZViewItem
  5. Most times the problem with any breech lock type lens mount is the thickness of the ears themselves. This is true for any of them be it Arri, Panavision or Mitchell etc. I never ran into a camera side that was wrong. Don't know about that video camera though. The same is true for the Arri S/B lens mounts. The position of the ears and their deminsions is very critical.
  6. Here's one. http://cgi.ebay.com/Arri-Arriflex-ST-Camer...1QQcmdZViewItem
  7. All true. And even more important is the optical tech who is assembling the glass into the new housings. Lots of variables in zooming optics.
  8. That's why it's best not to mount the spinning mirror at a 45 degree angle to the film plane.
  9. Hey Max, Whats that BFC stand for. Stateside it was the Blimped Fox Camera (65mm if I recall) sometimes also refered to as the Big F**king Camera. lol Chuck
  10. Hi Chris, What is the silicon used on? thanks, Chuck
  11. No 8mm cameras and as few 16mm as I could get away with. lol So there is no obvious retainer ring on back of the front of the camera? Mayby the lens comeas apart to expose mounting screws in the rear section. I don't know. Good luck
  12. I serviced, repaired and built motion picture cameras and lenses for thirty years and never once ran into a left hand thread.
  13. Or buy a motorcycle... it's legal to split lanes (or use to be anyways) in California. Legal but not always safe. lol
  14. You are kidding about doing a film shoot with out testing the camera... aren't you? That's a real good way to hamper your career.
  15. http://www.cameraguild.com/technology/formats.htm
  16. Cool. Be sure to get a tripod and head too.
  17. What camera body are you using?
  18. Take the ground glass out and set it on a surface plate. Now mount a very sharp #4H drafting pincel to a variable heigth gauge. Find the center of the ground glass with the tip of the pencil. Now raise the heigth gauge one half of the heigth of a 1:85 frame and slide the gauge along the surface of the ground glass. Repeat for the lower line.
  19. Leo, They rotate anti cinewise, like most still camera lenses do. Chuck
  20. Hi Paul, Are you sure that Leica is making lenses in Nikon mount? Haven't seen anything on them yet. I do know that Zeiss with Cosina is offering a line of lenses in Nikon mount. Chuck
  21. I'm not a cameraman...but I use to service, overhaul and build them along with the lenses. Every place I went to work at there was an old timer who after he got use to this lanky long haired hippy would take me under his wing. If not for those guys I would have not enjoyed the career that I did. I learned from my father that if it was something I didn't know about to shutup and listen and show respect to those who did. So I'll tell anybody what I do know if it will help them in some small way.
  22. Not everyone can afford a $45,000 Angenieux or Cooke zoom lens.
  23. Hello Diego, I think that is an Arii standard/B mount adapter to Aaton universal mount. The Aaton mount was 40mm flange focal depth and the Arri mount is 52mm ffd which gave enough leeway to make an adapter to mount the Arri standard or byonet mounts to it. The PL breech lock mount is to large in physical demension to work in that way. Chuck
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