Anyone know anything about an Orbit SII lens?

Discussion in 'Large Format Cameras and Accessories' started by darinwc, Jun 15, 2011.

  1. darinwc

    darinwc Subscriber

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    I picked up a 'Orbit S-II 210mm f5.6' lens.
    Does anyone know anything about it?
     
  2. Ian Grant

    Ian Grant Subscriber

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    It's a Calumet re-branded Symmar S and an excellent lens.

    Ian
     
  3. holmburgers

    holmburgers Member

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  4. darinwc

    darinwc Subscriber

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    Thanks for confirming that. It looked much like a symmar but Ive never heard of that brand before.
     
  5. Jon Shiu

    Jon Shiu Subscriber

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  6. holmburgers

    holmburgers Member

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    Thanks Jon; that actually corroborates with what darinwc PM'd with. So now I trust that neither of you are "making stuff up"... haah :wink:

    Any idea what its coverage would be?
     
  7. Ian Grant

    Ian Grant Subscriber

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    It's a 7x5 lens, it won't get even close to 10x8. You can easily find the coverage for a 210mm Tessar, but being f6.3 it'll have slightly better corner and edge sharpness wider than f22 (the recommended sharpest aperture) than an f4.5 Tessar or Tessar type lens.

    The best of the Zeiss Tessars was the f6.3 and corners get softer with the f4.5 and f3.5 designs, this is why the late production Xenar's went back to f5.6 from 4.5/4.7.

    Adding: Now I've got home the image circle for that older Orbit 8.5" lens should be about 245mm @ f22

    Ian
     
    Last edited by a moderator: Jun 15, 2011