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Daniel J. Fox

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Everything posted by Daniel J. Fox

  1. If you're shooting with a 50mm f4 lens on FF / 135 to match: Angle of view Perspective distortion "Compression" Depth of field On MFT (for ease of maths) you need to use a lens twice as wide (25mm) and open up the lens two whole stops (f2) If you don't adjust the aperture there is a two stop difference between FF / 135 and MFT. That's it. Have you read Steve Yedlin's excellent articles on matching blur across formats? https://www.yedlin.net/NerdyFilmTechStuff/MatchLensBlur.html
  2. Hi Bob I tried the lens on one of our Sony cameras - and yes the lens holds focus across the range. It may need shims on different mounts, but across the range it help focus well.
  3. Hi Bob I believe so yes - most rental companies list is as parfocal. I will put it on a camera tomorrow and check.
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