Flash Photography Mike Seeman, mikeseeman.com/photo WEEGEE: The Critic
Without flash With flash
Why use flash? Need more light Fill shadows Make your own (better) light
Exposure with flash Flash exposure: –Flash power –Aperture –ISO Ambient Exposure: –Shutter Speed –Aperture –ISO
20 th century flash exposure Guide numbers: Example: SB-800 has a GN of 125’ at ISO 100 Add additional factors for filters, bounce, etc. F-stop = Guide number Distance to subject 5 ft10 ft20 ft40 ft f/25f/13f/6.3f/3.2
21 st century flash exposure Just let the camera do it! –TTL metering (preflashes) –Auto-aperture –Flash compensation Wireless sync –Basic sync (radio: PocketWizards) –Wireless TTL (Nikon CLS/iTTL, Canon …)
Ambient Light
On-Camera Flash
Bounce Flash
Umbrella (left)
Umbrella w/ fill
Filters & Modifiers
Background: Wide Zoom
Background: Tele Zoom
Backlight
Too much lens flare!
Solution: Gobo
Daylight fill
Setting up a shot…
Slow Sync & Motion Front SyncRear Sync
to learn more… Strobist.com Less Gear More Brain Better Light