The exposure triangle

About this app

Aperture, shutter and ISO on a simulated photo: a park scene with a passing coupé and string lights, by day, at dusk or at night. A wide aperture softens the background and enlarges the bokeh, long shutter speeds smear the car into light trails, high ISO adds noise. "Hold EV" balances every change with another setting — light balance in stops, light meter and live histogram show: same brightness, different look.

Subject: School physics

More from School physics

• Density and buoyancy
• The Doppler effect
• Additive and subtractive colour mixing
• Newton’s cradle and collisions
• Converging lenses and ray diagrams
• Projectile motion

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