Horseman 2X converter - any information?

Discussion in 'Large Format' started by mark_malnes|2, May 19, 1999.

  1. Greetings All, I recently purchased a Horseman 45FA and noticed they also offer a "doubler" which mounts behind the lens board to multiply the focal length of the lens. Has anyone had any experience with this? Is there a loss of sharpness/contrast similar to the same thing in the 35mm world? Any input would be greatly appreciated. Thanx!
  2. Hallo Mark and all readers of this!
    I was owner of a Horseman tele-converter which I originally bought
    because I wanted to take as little weight as possible with me while
    shooting portraits on location. Well, I sold it againg after some time
    because the thing is that, if not for landscape, using it would prove
    very difficult with many cameras. The flange distance, unlike all 35mm
    or medium format converters, when using in conbination of the
    reccomended 150mm it is approx. 30cm (300mm effective focal lenght),
    so , many field cameras, notably the product to which this converter
    would be most suited, have an extention of the rail which doesn't
    exeed the 35cm. This means that there is no way for you to make a
    close up portrait with this converter, in order to use it for
    portraits I had to use a close up lens (+ 2), note that the image
    circle stays the one of your 150mm(+ -) very tight in landscapes!
    Other than that, the lens is great(!) if you can live with a
    considerable drop ( two stops obviously!) of the luminosity of the
    image projected on the ground glass (focusing in this conditions can
    be a drag at any age).
    It is verry good in both tones rendering and exeptionally good in
    contrast.This is due to the 7 elements(some are fluorite low
    dispersion ones,if memory serves me right) I might be wrong about the
    number of elements. However buy if you want, it is a lightweight
    photo-aid for your 150mm (if you have one!) for occasional long-focal
    photography. You'll loose two stops and your image circle won't be all
    that much but.... now you know, don't worry about quality, it is
    superb. My question is: if you need a inexpensive lightweight long
    lens why not buy a repro lens monted in shutter like a Rodenstock
    Apo-Ronar 300mm f9. They are cheap(ish) very good in colour and
    contrast and more luminous!
    think about it!
    Good luck

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