Part of the Lighting cluster
Cheat Sheet Lighting Intermediate

Flash Photography Settings Cheat Sheet

On-camera and off-camera flash settings for fill, bounce, and dramatic lighting in any environment.

Quick Reference Settings

Condition Aperture Shutter ISO Notes
Outdoor fill flash (bright sun) f/5.6 1/200s 100 Flash at -1 EV; fills shadows without overpowering sun
Bounce flash (white ceiling, 8 ft) f/4 1/125s 400 Aim flash at ceiling; soft wrap light on subject
Bounce flash (white ceiling, 12+ ft) f/2.8 1/100s 800 Higher ceiling eats light; open up and raise ISO
Direct flash portrait (close, 3-5 ft) f/5.6 1/125s 200 Use diffuser cap; power at 1/8 to 1/4
Off-camera single light (key) f/5.6 1/200s 100 45 degrees camera-left, slightly above; modifier softens
Off-camera two-light (key + fill) f/8 1/200s 100 Fill at -1.5 stops below key; 2:1 or 3:1 ratio
Dragging the shutter (ambient + flash) f/4 1/30s 800 Slow shutter captures ambient; flash freezes subject
High-speed sync (HSS) outdoor f/2 1/2000s 100 Shallow DOF in sun; flash power drops with HSS
Rear-curtain sync (motion trails) f/5.6 1/15s 400 Trails lead into subject; set flash to rear sync

When to Use This Cheat Sheet

Reference this when adding flash to any scene, whether you are filling shadows outdoors, bouncing light at an event, or building a multi-light setup. Flash is a tool, not a crutch.

Quick Settings Reference

The table covers nine flash scenarios from subtle fill to creative motion effects. The sync speed ceiling (typically 1/200s — 1/250s) is the key constraint unless you use high-speed sync.

Key Principles

  • Set ambient exposure first, then add flash. Dial in aperture, shutter, and ISO for the background. Then bring flash in to light the subject.
  • Flash power and distance follow the inverse square law. Double the distance, quarter the light. Small distance changes make big brightness changes.
  • Bounce creates large, soft light for free. A flash bounced off a white ceiling or wall produces flattering wrap light without modifiers.
  • Sync speed is your shutter ceiling. Most cameras sync at 1/200s — 1/250s. Go faster and you get a black band. HSS removes the limit at the cost of power.
  • Manual flash is more consistent than TTL. TTL adjusts per frame and can be fooled by backgrounds. Manual is repeatable.

Adjustment Tips

  • For fill flash outdoors, set flash exposure compensation to -1 or -1.7 EV so flash does not overpower the sun.
  • When bouncing, angle the flash head 45 degrees behind you and up for broader coverage.
  • Use a flash meter or chimping to nail power on the first setup shot, then lock it in.
  • In TTL mode, use flash exposure lock (FEL) to prevent the camera from re-metering between shots.

Common Traps

  • Using direct on-camera flash without a diffuser and getting harsh raccoon-eye shadows.
  • Forgetting that shutter speed does not affect flash exposure (only ambient); adjust aperture or flash power instead.
  • Bouncing off colored walls and getting a color cast on the subject.
  • Leaving flash in TTL for a consistent setup where manual would give identical output every frame.

ShutterCoach Connection

Upload your flash photo to ShutterCoach for feedback on light direction, shadow quality, and flash-to-ambient balance.

Frequently Asked

What flash settings work for outdoor fill in bright sun?

Set f/5.6, 1/200s, ISO 100, with flash exposure compensation at -1 EV. The flash fills shadows on the face without overpowering the sun. Stay at or below sync speed unless you switch to high-speed sync.

How do I bounce flash off a ceiling?

Aim the flash head at a white ceiling about 8 feet up and shoot at f/4, 1/125s, ISO 400. The ceiling becomes a large soft source that wraps around your subject. For 12-foot ceilings, open to f/2.8 and raise ISO to 800.

What's the difference between TTL and manual flash?

TTL meters per frame and adjusts power automatically, but backgrounds can fool it. Manual locks power so every shot matches. For consistent setups, manual is more repeatable. TTL works better when subject distance keeps changing.

Why does my shutter speed not affect flash exposure?

Flash duration is faster than your shutter, so shutter only controls how much ambient light registers. To brighten or darken the flash itself, change aperture, ISO, or flash power instead.

What is dragging the shutter?

A slow shutter (around 1/30s) with flash. The slow shutter exposes the ambient background; the flash freezes the subject. Try f/4, 1/30s, ISO 800 to mix room atmosphere with a sharp foreground.

When should I use high-speed sync?

When you need a wide aperture in bright sun and your shutter has to exceed sync speed. HSS lets you shoot f/2 at 1/2000s, ISO 100 for shallow depth of field outdoors. Flash power drops noticeably, so move the light closer.

Key Concepts

Diffused Light Fill Light Flash Photography Hard Light Shutter Speed

Learn the Technique

Blue Hour Photography: Capture the Cool, Ethereal Light Between Day and Night Flash Photography Techniques: From Fill Flash to Off-Camera Strobe Golden Hour Photography: How to Capture Warm, Luminous Light Every Time

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Food Photography Settings Cheat Sheet Golden Hour Settings Cheat Sheet Indoor Event Settings Cheat Sheet

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