APPENDIX A
CHARTS AND FORMULAS
Miniatures
(From The Photography of Miniature Effects—High-Speed Photography in Chapter 3.)
Formula to determine proper frame rate for scale being used:
(√m) × (r) = f
where
m = miniature’s scale
r = base frame rate
f = new frame rate.
Example: 1:4 scale at 24 fps = (√4) × (24) = (2) × (24) = 48 fps
Formula to determine proper actual speed of a scaled object at a scaled frame rate:
(rs/m) = (b)(b) × (r) = (as)
where
rs = real object speed
m = miniature’s scale
b = base speed
r = frame rate factor
as = actual speed for filming.
Examples: 36 mph × 1:6 scale car = 8.8 feet per second 8.8 feet per second × 2.5 normal frame rate = 22 feet per second
Camera and Lens Chart
(From Digital Cinematography in Chapter ...
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