Recommendation Request
and if you can't, shoot me an email, I have a spare 19" Artar sitting here in a barrel.
erie On 3/13/2011 7:18 PM, Thor Lancelot Simon wrote: In , wrote: If you were to pick a lens from 400 to 500mm, what would you choose? 8x10 coverage with modest movement is adequate. I prefer something in a shutter& synced. 19" (480mm) Artar, if you can find one. |
Recommendation Request
In article ,
Cheesehead wrote: On Mar 21, 10:38*am, erie patsellis wrote: and if you can't, shoot me an email, I have a spare 19" Artar sitting here in a barrel. erie On 3/13/2011 7:18 PM, Thor Lancelot Simon wrote: In , *wrote: If you were to pick a lens from 400 to 500mm, what would you choose? 8x10 coverage with modest movement is adequate. I prefer something in a shutter& *synced. 19" (480mm) Artar, if you can find one. Will it mount directly in the Ilex/Acme #4 without modification? Mine (Goerz, serial #775051) is in a #4 Ilex. It was that way when I got it. I've never had occasion to take it out of the shutter until now. I have seen some number of these, however, mounted in #5, and I vaguely remember hearing something about mounting in #4 presenting some difficulties. Let me take mine apart and look. Now that I do, I see it's quite an unusual mount. It appears the original barrel was cut in two, threads machined on the exterior of each half, and this was used as an adapter to mount the cells into the shutter with the correct spacing (which would have required trimming the barrel halves to account for the space between the front and back shutter threads). Since I do not know the original spacing for this lens, it's possible that the remounting operation left enough of the barrel in place to effectively re-optimize the lens for infinity rather than its original optimization. Process lenses in barrel usually shipped optimized for 1:1. I have seen this done with smaller Artars using shims in the shutter. However, Richard did some research a few years ago with the old catalogs and determined that at least for the last few decades they were sold (I believe) Artars longer than a certain length were in fact optimized for reproduction ratios other than 1:1 -- IIRC 1:5 to about 1:10 depending on the length of the lens. So no respacing may be required nor in fact desired. If I got one of these in barrel, my inclination would be to reproduce this clever trick of using the barrel as a shutter thread adapter, but to carefully measure so the total length of the assembly ended up exactly as it had been before. No point getting it wrong. Whatever was done with my Artar when it was mounted, it is *tack* sharp. It is pretty much my favorite lens. I even shoot it on 4x5 though this is a bit of an issue as the large shutter does not allow certain movements on my Wisner -- it bumps into the uprights if I tilt the lens. -- Thor Lancelot Simon And now he couldn't remember when this passion had flown, leaving him so foolish and bewildered and astray: can any man? William Styron |
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