So here's what I do.
- Insert the film into the 4x5 holder.
- Insert the step tablet over top.
- Turn on your light table.
- Take a meter reading off the light table.
- Add 4 stops. Set the shutter/aperture.
- Focus your camera to infinity.
- Add a filter or filter adapter ring to the lens, and ** gently ** lay the camera lens down onto the light table. (yep that's what I do.)
- Take the photograph.