Thanks for checking out my photos. Here are some directions to try these yourselves!

Physiograms

Materials

  1. Camera capable of unlocking the shutter for an indefinite amount of time
    • I like to use a DSLR with a remote shutter device. Refer to your camera’s manual on setting up an indefinite shutter (sometimes called Bulb mode).
  2. A neutral density (ND) filter (variable or many sets)
    • I prefer a variable ND to quickly change stops if I need
  3. A tripod that can angle a camera towards the roof
  4. Some string
  5. A flashlight
    • I use the classic MagLite flashlight (non LED) as it is the best for long exposure
    • Any flashlight can work but be careful with LED’s as the Strobe Effect can cause dashed lines
    • It must have a focused point of light, you might need to remove the cap or protector on the flashlight

Setup

  1. Attach the string to the flashlight and hang it off the roof or equivalent. The string must be atleast a few feet in length.
  2. Remove the flashlight cap so it is a single point of emission and turn it on
  3. Setup your tripod with your camera facing the flashlight directly in the middle
  4. Focus your camera on the point of light (you might need to contort your body to see in the viewfinder)
  5. Attach your ND filter. If its variable you will need a large step so fairly dark
  6. Set your camera to bulb mode. Set the ISO to the lowest possible (usually 100) and use the highest f-stop value. Ready your remote shutter.
  7. Turn off all the lighs
  8. Swing the flashlight in the desired direction and activate your shutter
  9. Let it swing for as long or short as you like and re-activate your shutter to stop the photo
  10. You should see a classic physiogram appear!
  11. See Image for reference

You can swing in any of the following directions, each will give a unique effect.

Troubleshooting

Some common problems that you might encounter:

  • You might have too much or too little light enter. This is where its important to use a variable ND filter and adjust accordingly. You can also adjust your ISO/Aperature.
  • Dashed lines? This is probably because you are using an LED bulb which strobes. Find a different LED or use a incandescent bulb.