Chroma Key in Super 16

[mattharding]

I have heard some people become very concerned with doing a Chroma Key effect off of a super 16 negative. I have had great luck with the Vision stocks. I would imagine that shooting with the Vision 2 7217 would be even better.

 

First of all, should there be any worries of pulling a good key on super 16 with a good Spirit transfer?

 

Then, what if I tried some very minor diffusion on close-up shots that end up being key shots? Is that really gonna screw up the edges? Sounds from the other post on the topic that I would use something very sublte like a soft fx.

[David Mullen ASC]

Dn't use diffusion when doing chroma key shots; you can always add it in post when doing the composite anyway.

[John Pytlak RIP]

I agree with David -- don't do anything to soften the edges.