Photography Math Formulas to Improve Composition and Exposure

This video explains five different mathematics rules used to improve the composition of the photo and video scenes you shoot. Topics covered include: Focal Length Rule (AKA the Reciprocal Rule), the Sunny F/16 Rule, F/8 and be There, the Inverse-Square Law, the 600 Star Rule and more.
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Chapters:

00:00 Opening
01:59 Exposure Introduction
02:51 Eliminate Camera Shake with the Focal Length Rule (Reciprocal Rule)
04:03 Sunny F/16 Rule
06:24 F/8 & Be There
07:34 The Inverse Square Law For Lighting
08:27 600 Star Rule
09:50 Learn More

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Math Formulas mentioned in this video:

The Focal Length Rule/Reciprocal Rule:
1/Focal Length = Minimum Shutter Speed

The Sunny F/16 Rule:
On a Bright Sunny Day, F/16 + 1/ISO (for the Shutter Speed) = Proper Exposure

Bright Sun, Snow or Sand = F/22
Normal Sunny Day = F/16
Hazy/Lightly Cloudy = F/11
Cloudy = F/8
Overcast = F/5.6
Sunset/Shade = F/4
Dusk = F/2.8

F/8 and be There
Set your aperture to F/8 and take a guess at the shutter speed (nothing under 1/60th or a second), you’ll get an acceptable image.

Inverse-Square Law for Light:
1/Distance Between Light and Subject Squared = Light on Subject

600 Star Rule:
600/Focal Length = Maximum Shutter Speed

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