[Frameworks] shooting a projection with 16mm film

[Christopher Ball]

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 <nebaker at pnca.edu> 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 <kludge at panix.com> 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
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