An incident light meter will not tell you much at all. It wont be possible to get incident readings of the projected images, especially if they are small dots (stars). In an ideal world you'd shoot a test. You might be able to determine the level by shining a light on the wall that looks by eye roughly the same brightness as the projected images, and then taking an incident reading of that, if you can't access a spot meter. It might get you in the right range.
Do you have fast lenses? You'll want 1.3 lenses for sure. What stock are you using? If you shoot with 500 ASA stock, wide open on fast lenses you will probably get an exposure, though it still might be a bit low. 500 asa stock at f1.3 will read light thrown by a candle, which is quite low, or will easily expose exterior night streets. If you have any sense of the relative brightness of the projection to those type of situations it might help you estimate. You could consider push processing as well, to get more exposure, but the smaller projected images of stars may start to look blurry if the pushed image gets too grainy. Christopher On Mon, Jun 24, 2019 at 11:48 PM Nicole Baker <[email protected]> wrote: > No need for real time. Speeding the motion up could be ideal. However, my > camera only slows to 16fps. Or maybe 8? > > > On Mon, Jun 24, 2019, 8:40 PM Scott Dorsey <[email protected]> wrote: > >> Does it have to be in realtime? Light levels will be very very low, >> but undercranking the camera might make it possible to record something. >> --scott >> _______________________________________________ >> FrameWorks mailing list >> [email protected] >> https://mailman-mail5.webfaction.com/listinfo/frameworks >> > _______________________________________________ > FrameWorks mailing list > [email protected] > https://mailman-mail5.webfaction.com/listinfo/frameworks >
_______________________________________________ FrameWorks mailing list [email protected] https://mailman-mail5.webfaction.com/listinfo/frameworks
