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In photography, available light refers to any source of light that is not explicitly supplied by the photographer for the purpose of taking photos. The term usually refers to sources of light that are already available naturally (e.g the sun, moon, lightning) or artificial light already being used (e.g to light a room). It generally excludes flashes.

The use of available light may pose a challenge for a photographer. The brightness and direction of the light is often not adjustable, except perhaps for indoor lighting. This will limit the selection of shutter speeds, and may require the use of shades or reflectors to manipulate the light. It can also influence the time, location, and even orientation of the photo shoot to obtain the desired lighting conditions. Available light can often also produce a color cast with color photography.

Sources

Indoor

• Light shining in a window
• Lightbulbs
• Fluorescent lamps

Outdoor

• The sun (see also golden hour)
• The moon
• Stars (very dim)
• Street lights
• Light pollution
• Fireworks
• Lightning

Other

• Lanterns
• Fires
• Candles
• Flashlights (torches)