Sunny 16 Rule

In photography, how to get o right exposure is very important and it is not an easy work to do. To day, with the help of new technology and the arrival of DSLR, photographers have much more ease to get the right exposure. However, even the newest DSLR of Nikon, Canon, Sony etc.. can just give photographer the acceptable exposure to their photos. In this entry I will show you how to use Sunny 16 rule as a guide to exposure without a light meter.

Set your aperture to f/16 and set your shutter speed accord to your ISO film speed.
For example: for ISO film 100 you should set your shutter speed to 1/100 or 1/125. Actually, the shutter speed will not exactly equal to film speed but try to set it as close as possible to the film speed

There are the elaborated forms of Sunny 16 rule to use in different lighting conditions :

(source: http://www.camerareview.com/templates/sunny16.cfm)