SchoolTrack 2 · Light
LESSON · LIGHT
Light for photo, light for video
A photograph needs light for a thousandth of a second; a video needs it for every frame. That one difference decides which lights each one uses.
Photo: flash
- A short, very bright burst freezes motion.
- Speedlights on the camera or on stands; studio strobes for more power.
- A modelling lamp shows roughly where the light will fall.
- You see the result only after the shot, on the screen.
- Batteries last for hundreds of flashes.
Video: continuous
- The light is on the whole time: what you see is what you record.
- LED panels and point sources, Fresnels, HMIs, tubes.
- It must not flicker at the camera's frame rate and shutter.
- Colour quality matters: cheap LEDs can turn skin green or magenta.
- Power and heat set how long you can shoot.
THREE-POINT LIGHTING · FROM ABOVE
Key
The main light, to one side of the camera. It shapes the face.
Fill
Softer, on the other side, to open the shadows the key leaves.
Back
Behind the subject, to draw a rim of light and lift them off the background.
One-light portrait
A strobe or LED in a big softbox at 45 degrees, a reflector opposite.
Interview
A soft key, a dim fill, a small back light; the window as a practical.
Product
Two softboxes either side, a white sweep, a flag to stop flare.
Night street
No kit at all: shop windows and street lamps, a fast lens, high ISO.