Right. The light would bounce around just the same, only it would be proportionally dimmer.
Originally Posted by Michael R 1974
Now I use Zones loosely in this discussion. When I test film it's with a sensitometer. Then I work in Zones as I study my graphs because I find it easy to get my head around. I imagine where the different Zones will fall on the curve. I look at Zone I and lift that point to the Y-axis coordinate corresponding to about Zone II (I say about, because I look 0.4 LogE to the right). The difference is a certain number of Meter-Candle-Seconds which I take and "add" to each of the coordinates of my step wedge. Flare's impact quickly tapers off. But this is how I take a sensitometer test and make it agree with light meter marked with Zone System grays.
In a sense I call the camera test you describe as a no-flare test. Even though the camera introduces flare. I say no-flare because the amount of flare at Zone V exposure is about what would take Zone I up to Zone II. BUT, in a camera test you stop down four stops and it no longer brings you from Zone I to Zone II. Now it only takes Zone -III to Zone -II (which is to say 'nada').