Shutter Speed

The 3 camera settings that comprise the Exposure Triangle are shutter speed, aperture & ISO.

On the back monitor of our Canon DSLR cameras, the aperture setting is displayed with “F” followed by a number.  

ISO 6400, 1/4000 shutter speed, f/8 aperture

Apertures (from smallest openings to largest openings) are typically numbers f/16, f/11, f/8.0, f/5.6, f/4.0, f/2.8, f/2.0, f/1.4,

The shutter speed settings are shown on the top left on the back monitor. 

Expressed as fractions of a second, the shortest or highest shutter speed on our cameras are 1/4000 seconds and the longest or slowest shutter speed is 30" seconds.

ISO 200, 10" shutter speed, f/22 aperture

The third setting ISO controls the camera’s sensitivity to light. 

This setting goes from 100,200,400,800,1600,3200,6400 on our cameras.

To center the meter on our cameras, we can either change the Iso, aperture, or the shutter speed.

ISO 100, 1/25 shutter speed, f/5.6 aperture