Discover

:
In photography, the 'sunny 16 rule' (or, less often, the "'sunny 16 rule'") is a method to estimate correct daylight exposures without using a light meter.
The basic sunny 16 rule, applicable on a sunny day, is this:

★ Set aperture to and shutter speed (reciprocal seconds) to ISO film speed.
For example, for ISO 100 film, choose shutter speed of 1/100 second (or 1/125 second)
The elaborated form of the sunny 16 rule for more general situations is:
#Set the shutter speed to the setting nearest to the ISO film speed
#Set the f-number according to the table below:
::

Aperture	Lighting Conditions	Shadow Detail
16	Sunny	Distinct
11	Slight Overcast	Soft around edges
8	Overcast	Barely visible
5.6	Heavy Overcast	No shadows
4	Sunset

[1]
For example, to shoot ISO 100 film in sunny conditions, set the shutter speed to 1/100 or 1/125 and the f-stop to 16. With ISO 200 film, set the speed to 1/200 or 1/250. For ISO 400 film, 1/400 or 1/500. As with other light readings, the shutter speed can be changed, as long as the f-number is compensated. For example, 1/250th of a second at 11 would be equivalent to 1/125th at 16.

Contents

External links

External links

★ Rules of thumb for moonlit exposures

★ Ultimate Exposure Computer Fred Parker's page on exposure.