Equivalent Exposure & the Exposure Triangle

The 3 camera settings that comprise the Exposure Triangle are Aperture, ISO & Shutter Speed.

On the back monitor of our Nikon D3400 cameras, the aperture setting is displayed by the 2nd circle (1st, 2nd or 3rd from the left). Apertures (from smallest openings to largest openings) are typically numbers f32 , f22, f16, f11, f8, f5.6, f5, f2.8, f2

The shutter speed settings are shown on the 1st circle (1st, 2nd or 3rd from the left) on the back monitor. Expressed as f1/3200 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 to 12800 (max) on our cameras.

To set the ISO on our cameras, we hold down the Fn button an rotate the command dial. Set the iso to 400. Then set the aperture to f5.6, by holding down the #4 button on the top of the camera and rotating the Command dial.

Sadie took a picture while spinning of an elaphant in between the 400 and 500 building. ISO 400, 1/125, f5.6

Sadie to a picture of me throwing water into the air in front of the science building. ISO 400 1/3200, f5.6