rear projection on 16mm

[Daniel Miler]

Im about to shoot a short film on 16mm, and were gonna use back projection (the projection itself would be digital, and its material shot on digital camera).  I would appreciate any advice since i never did this. 

my concerns are mostly two: 
1. whats the best way to expose/ measure the projection? 

2. should I take any special precautions to avoid flickering? or will it be fine just as long as the camera and the projector are set to the same frame rate? 

if i plan to use hand cranck, I imagine there is no way to avoid  variable flickering, right? 

 

Thanks 

Daniel

 

[Robert Houllahan]

I wold spot meter the projection maybe put up a chart with a greyscale and a white point to get an idea of exposure with the spot meter.

 

Really depends on the projector, I think 3-chip DLP or LCoS or LCD are what you want to try, avoid a single chip DLP with a color wheel.

 

 

[Daniel Miler]

Thanks Robert,

You mean shoot a gray chart, and then project and measure the gray chart off the projection, right? 

[Robert Houllahan]

I would just get a commonly available reference chart which has white/black and grey patches (Maybe look at Light Illusion web site) and project that. 

 

Then use the spot meter to determine exposure range for the projector.

 

I would recommend a daylight balanced film stock as the projectors mostly try to hit a 6500deg white point more or less

 

[Daniel Miler]

great idea

thanks robert!