Photography with Flash Module A Types Features Control Sync speed Dual Lighting ----------------------------- Presented by: Lester Parkes LPSNZ New Brighton.

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Presentation transcript:

Photography with Flash Module A Types Features Control Sync speed Dual Lighting Presented by: Lester Parkes LPSNZ New Brighton Photographic Club

Flash light: Types & specs On-camera pop-up or off-camera unit. Small & convenient package Very fast pulse of light Ex: Nikon SB800 ~ 1/1,100 – 1/2,700 sec)

Flash light: Types & specs continued … Directional light pattern - harsh light with shadows (use a diffuser or bounce off walls/ceiling) Power rating indicated by Guide Number (GN) - Calculation: GN = D x Ap (Ex: Nikon SB800 has GN = ISO100, 35mm zoom) Level control: Automatic or manual - In both cases, amount of light determined by flash duration

Flash light: Camera sync speed Sync speed is the fastest shutter speed that allows full illumination by flash Try this: 1. Turn flash off 2. Set camera to Manual mode with shutter at 1/1000sec 3. Turn flash on 4. Note change in shutter speed The new shutter speed is the cameras sync speed. Typical sync speeds: 1/160s, 1/250s, 1/300s (depends on camera brand)

Flash light: Control of exposure Flash is typically used to illuminate a foreground subject Controlling foreground illumination with flash: 1.Duration of the flash pulse 2.Camera: ISO and Aperture 3.Subject distance Note: Shutter speed is not included Key point: Shutter speeds slower than the sync speed do not affect exposure of foreground by flash Very short flash duration Slow Shutter speed Compared to flash duration Shutter > Sync speed

Flash light: Dual lighting A shutter speed slower than the sync speed … - does not affect flash exposure - allows background light to take part in the photograph Dual lighting situation: (1) Flash for foreground and (2) Ambient light for background Setting the shutter speed longer than the sync speed is called dragging the shutter Method (refer to photo on next page): 1. Set camera to Manual 2. Adjust exposure for background (Aperture, Shutter speed, ISO) (make sure shutter speed is slower than the sync speed eg 1/100s, 1/60s etc) 3. Set Flash to Manual 4. Adjust flash level for foreground exposure (Taking these photographs in dim light conditions favours a slower shutter speed Ex: sunrise, sunset )

Example of dual lighting: Background (sunset) and Foreground (Flash)

More information … Select Lighting 101 for 29 tutorials covering all aspects of photography with flash (equipment, connections, lighting techniques) 15 articles about flash photography techniques (with lots of example photos)