FTII People

I was looking forward to calculating studio size requirements for a still shoot. I found these interesting sites, which are basicaly online Field Of View Calculators

Equivalent Focal Lengths for Different Film Formats

Photography Calculators
includes:

• Depth of Field Calculator
  Parallax Calculator
  Angular Field of View Calculator
  Dimensional Field of View Calculator
  Mosaic Calculator
  Lens Equivalence Calculator

Rui Salgueiro's field-of-view calculator

Field of View Calculator for SLRs and DSLRs

Notes on Lens Calculator

Lens Focal Length and Field of View