A fine B&W Proportional Reducer. RA4 Blix

A fine B&W Proportional Reducer. RA4 Blix

  1. Claire Senft
    In the July/August 1992 issue of Darkroom & Creative Camera Techniques..now called Photo Techniques magazine is an article by Hans F. Dietrich who was a retired electron microscopy instructor who had authored and co-authored sveral papers on...
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