exposure-triangle-fundamentals

name	exposure-triangle-fundamentals
description	Use when setting camera exposure manually. ISO, aperture, shutter speed are the three exposure controls.

Exposure Triangle Fundamentals

Exposure triangle: ISO (sensor sensitivity), aperture (f-stop, depth + light), shutter (motion blur + light). Adjust one, compensate with another.

Each control's effect

1. ISO (sensor sensitivity): higher = more light + more noise. Native ISO is cleanest.
2. Aperture (f-stop): lower number (f/1.8) = more light + shallow DOF. Higher (f/16) = less light + deep DOF.
3. Shutter speed: slower (1/30) = more light + motion blur. Faster (1/250) = less light + frozen action.

Video-specific shutter rule

For 24fps video: shutter = 1/50 (180° rule) For 30fps video: shutter = 1/60 For 60fps video: shutter = 1/120

Doubling fps for natural motion blur. Going faster makes motion choppy (Saving Private Ryan look).

Exposure starting points

Indoor talking head:

• ISO 800-1600
• Aperture f/2.8-4
• Shutter 1/50 (24fps) or 1/60 (30fps)
• White balance: match light source

Outdoor sunlight:

• ISO 100-400
• Aperture f/4-8
• Shutter 1/50 (24fps)
• ND filter to control light

Where this fits in the X3 empire

Camera basics for CardPrepAI tutorial videos and social content.