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  1. Replies
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    270mm Computar covers 12X20?

    The goal is to eventually shoot all three 150s (along with a 150mm Germinar-W, 150mm G Claron, 150mm APO Sironar (-W), 150mm Super Symmar HM and 159mm Wollensak Ext. WA) on 8x10. In theory, all these...
  2. Thread: ULF and wind

    by Jerry Xu
    Replies
    22
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    9,065

    ULF and wind

    Is the inside of your bellows very dark?
    Reflections from the interior seemed to reduce contrast of long exp shots and could make them seem unsharp.
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