With some cameras it maybe necessary to adjust the camera's meter to compensate for the increase in brightness produced by the Intenscreen. This is true with cameras that meter off the focusing screen rather than the film plain (refer to your camera manual). To adjust your meter:

1. Using your existing screen, set the camera lens to infinity and meter off of a grey card or evenly illuminated surface. Record the exposure.

2. Install the Intenscreen and take an exposure reading from the same distance, on the same surface, under the same lighting conditions.

3. Adjust the ASA/ISO index until the exposure is identical to that of the original screen.