Re: 16mm rs 232 or machine controlled camera, fast film ...

From: Sam Wells (email suppressed)
Date: Fri Mar 24 2006 - 08:07:17 PST

> also, what do you think would
> be the fastest but best film I
> could use for this project, of
> filming against lcd screen.
> how long do you think I should
> expose for ? what lenses might
> you use, how far away, etc ?

I'm the wrong person to answer, haven't done this but.....

Out of curiosity I spot metered my 23" Apple LCD display. Thinking 7201
neg (sharpest, finest grain, daylight stock should work well with a D65
iow ~ 6500 degrees CT white balance)

With the "solid dark grey" desktop and the brightness cranked up I get
f 1.4 (24 fps/ standard 172/180 degree shutter) - that's the monitor
set for the 2.2 gamma I use -- with the Mac native gamma of 1.8 I get
1/2 stop more....

(I "should" have a real 18% grey reference somewhere but I don't... )
..I looked at some quicktimes of my work, of course anything dark is
going to fall of _real_ fast...

You could swap the 7201/50D for 7205/250D for more speed, similar
contrast.... but single frame and a longer exposure I'd be inclined to
use the slower finer grained stock.

You've *got* to test first.

PS I would err on the side of overexposure for sure -- Vision 2 can
take it....

Good luck - could look cool, weird, I don't know...

FWIW Harris Savides shot a test with Gus Van Z - for "Last Days" using
DV & then filmed the results of an Apple Cinema Display in 35mm.... he
said it looked "great" but had "too many layers of information"


For info on FrameWorks, contact Pip Chodorov at <email suppressed>.