Dd in mm for f-stops smaller than F64

Discussion in 'Large Format Cameras and Accessories' started by gbenaim, Oct 6, 2007.

  1. gbenaim

    gbenaim Member

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    8x10 Format
    Hi all,

    I've been using the focus distance differential method for establishing f-stopm, but the chart given in the article on LFF only goes to f64. Using 8x10 I'm frequently in need of smaller stops, so was wondering if anyone has the numbers for 90 and 128. Thanks in advance,

    GB