This pinhole light meter is made for pinhole paper cameras. The exposure time is the amount of time that the pinhole is open.To calculate the exposure time select the iso and the F number and then press the Exposure time button.
This pinhole light meter is made for pinhole paper cameras. The exposure time is the amount of time that the pinhole is open.To calculate the exposure time select the iso and the F number and then press the Exposure time button.