Film type & shutter speed.

[Hannoush]

I'm a photographer (still photography)..

Do u use 35m positive films (slides) in shooting first time or only negative?

Does cinema cameras have shutter speed like in photography?

 

Thanx alot

 

Hannoush.

[Filip Plesha]

Hello,felow photographer..

 

Reversal film is rarely used for standard cinema film(unless you want

a special look).

Reversal ("slide") films are mostly in 16mm format,exept kodak 5285

But they do use sometimes reversal film.

 

Motion picture cameras have shutter angles.

the have a semi-circular rotating shutter that has a mirror on

the front side so it reflects the image to the viewfinder

whenever it is in the position of blocking the film.

It is very similar to the mirror in SLR cameras.

The shutter is usually semi-circular (it has 180 degrees)

That means it blocks the light from reaching film half the

time,and half the time it does not block the light.

Considering that motion picture photography runs normally at

24 fps,that means that the exposure time is 1/48 of a second.

 

Some cameras have changable shutter angles,so you can

for example close the shutter to 90 degrees. This will give you

one stop less light because the exposure time will be 1/96 of a second.

but this is done only for special motion effects as seen in

fighting scenes in Gladiator for example.Motion blur is good in cinematography

because it amplyfies the illusion of continuous motion.

 

So basicly you could say that in normal shooting procedures

the shutter angles is 180 degrees.

 

THat means,if you want to figure out what could you capture with

a motion picture camera,thing about what could you capture with your SLR

camera at 1/60s exposure (which is near to 1/48s) and this is it.

 

There is a very wide variety of filmstocks cinematographers use,

for example,there are a lot more choices in motion picture photography

from Kodak,than there is for still photography. (i'm not counting consumer

negative and slide films)

[David Mullen ASC]

"Buffalo 66" is the only film I can think of entirely shot on 35mm color reversal and normally processed (not cross-processed into a negative.) "Blow" used color reversal normally processed for the early childhood scenes. In these cases, a negative had to be created in an optical printer from the reversal original.

 

There were also some 1940's color movies shot on 35mm color reversal ("Technicolor Monopack" used for some movies was actually a lower-contrast Kodachrome.)

 

There were lots of 16mm movies shot on color reversal, up through the end of the 1970's when color negative became more common.

[Hannoush]

Thank u Filip and David, that was quite helpful and interesting.

 

Hannoush.