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APPENDIX A

# CHARTS AND FORMULAS

### Miniatures

(From The Photography of Miniature EffectsHigh-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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