Flash PhotographyMike Seeman, mikeseeman.com/photoWEEGEE: The Critic

Why use flash?Need more lightFill shadowsMake your own (better) light

Exposure with flashFlash exposure:Flash powerApertureISOAmbient Exposure:Shutter SpeedApertureISO

20th century flash exposureGuide numbers:

Example: SB-800 has a GN of 125 at ISO 100

Add additional factors for filters, bounce, etc.

5 ft10 ft20 ft40 ftf/25f/13f/6.3f/3.2

21st century flash exposureJust let the camera do it!TTL metering (preflashes)Auto-apertureFlash compensationWireless syncBasic 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

to learn more