Shutter Speed

ISO 1600 55mm f/5.6 1/1000 sec

The 3 camera settings that comprise the Exposure Triangle are f stop, iso and shutter speed

On the back monitor of our Canon DSLR cameras, the aperture

setting is displayed with “F” followed by a number.  Apertures (from smallest openings to largest openings) are typically numbers f/22, f/20, f/16, f/10, f/6.3, f/5.6, f/4.0

ISO 100 25mm f/20 10.0 sec

 For the 2nd picture, we learned how to securely fasten a camera to a tripod to take a picture showing a ghost-like image.

ISO 100 24mm f/25 1/30 sec

ISO 400 24mm f/4.0 1/4000 sec

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.

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 change the the aperture, shutter speed,  or the ISO

To center the meter on our cameras, we can change the the aperture, shutter speed,  or the ISO