The most essential element
of photography: Light
Metering the Light =
Aperture + shutter speed + ISO
• An aperture relates to the circular opening in the
lens that gets bigger or smaller, shown in ‘f’ numbers
• The shutter speed relates to the amount of time the
‘shutter’ remains open for.
• ISO relates to how ‘sensitive’ the camera sensor is.
SHUTTER SPEED affects the capture of ‘Movement’
Fast Shutter Speed
Slow shutter speed
It’s all about BALANCE!
• Getting a ‘correct’ exposure is about
creating a balance between the 3 main
• Adjusting one means you must
compensate with the others.
1” F22 ISO 800
1/20 F5.6 ISO 800
1/60 F3.5 ISO 800
1/30 f4.0 ISO 100
1/30 f4.0 ISO 400
1/30 f4.0 ISO 800
1/30 f4.0 ISO 1600
• What 3 things make up exposure?
• Is an aperture a circle, square or triangle
• What is the thing that increases or decreases
film/digital sensor sensitivity?
• What is the thing that opens and closes for a
specified amount of time?
• What does a light metre help you do?
• What is meant by line, texture and pattern in