anti halation backing in B\W film

[sudhakarankc8@gmail.]

Hi ,

I am new to this forum, i am cinematography student..

I have some queries

1)I want to know in detail about anti halation backing in B\W film ?

2)And want to know about remjet packing in colour -ve?

Please clear my doubts.

Thanks in advance,
Sudhakaran.

 

[David Mullen ASC]

What are your doubts?

The remjet backing on color negative also acts as an anti-static backing, which is why b&w is more prone to static problems. I suspect it is also a more effective anti-halation backing because you still have halation artifacts in b&w, like those pretty rings around car headlamps and candles.

A side-note, 3-strip Technicolor couldn't have any backing on the blue record because light had to pass through to the red record bipacked behind it. The blue record (blue-sensitive b&w film) was dyed red to act as a filter, and the filter in front of the bipack was magenta (blue + red), so halations took on a magenta cast: