Pentax 67 2X vs. 1.4X Test Report

Discussion in 'Medium Format' started by michael_reichmann|1, Apr 17, 2002.

  1. I have just published a test of the Pentax 67's 2X Extender vs. the
    1.4X Extender. The test was done with the Pentax 400mm f/4 ED(IF)
    lens. What made the test interesting as well as problematic was the
    expected Pentax 67 problems of shutter vibration, and the need for
    approriate support when shooting with such very long lens
    combinations (800mm).


    The Luminous Landscape
  2. Thank you, Michael. Your articles are very valuable.
  3. About stopping down by 2-f stops from wide open I have exactly the same experience with Canon lens & Tamron SP TC's.<br>
    Again - Pentax optics proved to be really good.

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