Flash Charts for PinPLUS Cameras
The Charts are for A.S.A 100, 200, 400, 800, 1600, and 3200 film.

Columns 1 and 11 have the f-stop value.

Columns 2-10 on the top row have the watt-seconds for the flash power required.

Columns 2-10 second row down have the distance for flash power verses f-stop.

Columns 2-10 have color areas for defined general usage.

  • 1. Shaded gray: to close to easily keep the flash out of the pinhole.
  • 2. Shaded blue: pinhole camera applications.
  • 3. Shaded orange: large format cameras with lenses.
  • 4. Shaded yellow: small, medium, and large format cameras with lenses.
    If the distance flash to subject is too close. Find an acceptable distance. Note the watt-seconds required. Move to the left until you find watt-seconds of flash you are using. For each column to the left the number of firings double. One to the left = 2 flashings/+1stop. Two to the left = 4 flashings/+2stops. Three to the left = 8 flashings/+3stops. Four to the left = 16 flashings/+4stops. Generally pinhole pictures are under exposed, therefore expose for a higher f-stop, if there any question of how to adjust the light. Note the time burn the film image is 16/1,000 of a second, if 16 flashings is the only source of light for the picture. Thus color and black and white can equal be used with no reciprocity failure. Even though the total picture time may be 2 minutes by the time the flash units) are allowed to recycle.
    LAST EXIT