The sun has set and you’ve left your external flash at home. You could use the room’s artificial light or your camera’s built-in flash, but with no control over light direction your images may not be that interesting.
There’s a laptop available, a red LED bicycle rear lamp, and a 5-LED white torch. What can you do with those light sources?
You could use the light from the laptop’s screen as a light for a portrait that balances the subject’s 18th Century house and their 21st Century life. The directional light from the laptop screen illuminates the corner of the room, and the person, whilst leaving the rest of the room dark. It’s almost like a candle’s light.
That brings us to the LED bicycle rear light. The points of light from the LEDs are broken up by the light’s lens into a partly square shape. Using a tripod to make sure the camera is steady, and asking asking the person to move it in a star shape whilst the shutter is open, results in this image. The 13 second exposure allows for a few star shape cycles to give more interest.
Finally we’ve got to the 5-LED torch. The LEDs are in a line and quite distinct. Using a long exposure again, and making sure the swirly is more random than the bike light, gives an interesting pattern. Copying it and mirroring it in Photoshop gives symmetry.
No sun, no flash? No worries! Just use whatever lights you can find!!