Matty W

Lives in United States Middletown USA, CT, United States
Works as a Student
Joined on Feb 7, 2005

Matty W's recent activity

  • Someone posted this formula: effective focal length (at minimum focus distance) = minimum focus distance [in mm!] / (maximum reproduction ratio + (1/(maximum reproduction ratio ))+2) It gets ...
  • Way over my head, then, sorry. Maybe something like this would work: http://www.lightandmatter.org/2015/tech-photography-articles/how-to-calculate-a-lens-focal-length-slightly-simplified/ You could ...
  • It seems you have your answer, even if it's hard to know the exact numbers. I assume there's a way of calculating something more precise from the minimum focusing distance and magnification figures. ...
  • I imagine it's someone calculating field of view as they focus at different distances, using stars, which are always at infinity and can be measured in focus there‚Äďand also out of focus by looking ...
  • I don't recall it being that bad with my 70-200mm f2.8 II IS, but I'm not shocked that there's a big difference between the three. I would have expected the Canon to breathe least and the Nikon to ...
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Total messages 206
Threads started 22
Last post 10 months ago
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Photos uploaded 4
Last upload Feb 13, 2012