Jump to content


Photo

Iris Fades


  • Please log in to reply
2 replies to this topic

#1 Tim Halloran

Tim Halloran
  • Basic Members
  • PipPip
  • 76 posts
  • Other

Posted 23 November 2011 - 08:36 PM

Does anybody know specifically how iris fades were accomplished, prior to digital editing? Was it always done with the optical printer or was it done with something in front of the lens?

The reason I ask is there was an "iris vignetter" that was made for the Bolex, shown here:

Posted Image

And it was supposed to do this:

Posted Image

But Andrew Alden says in the Bolex Bible that the iris vignetter doesn't really work, that it just gave the effect of defocussed brackets coming in from the sides rather than a circular iris fade.

So, how were iris fades done professionally back in the day, and what would be the best way to do one today, outside of a digital effect?

Tim
  • 0

#2 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 20074 posts
  • Cinematographer
  • Los Angeles

Posted 23 November 2011 - 08:47 PM

Something similar was used in the Silent Era for circular iris effects, just better -- more leaves, etc. But by the mid 1930's it would have been done in an optical printer.
  • 0

#3 Dom Jaeger

Dom Jaeger
  • Basic Members
  • PipPipPipPip
  • 1733 posts
  • Other
  • Melbourne, Australia

Posted 23 November 2011 - 10:05 PM

Because it's directly in front of the lens, those kinds of faders have very blurred edges, but they would still create a diminishing circle. The darkening would appear to come in from the sides because it's a rectangular frame and the circle is so diffused. The more a lens is stopped down, and closer the focus setting, the more the circular edge would be defined.

I have a version for a 50's 8mm camera that is larger and fits in a matte box. It can sit a little further away from the front of the lens and is quite effective if the lens is stopped down a bit.
  • 0


New Pro Video - New and Used Equipment

Media Blackout - Custom Cables and AKS

Wooden Camera

Rig Wheels Passport

Gamma Ray Digital Inc

CineTape

Abel Cine

CineLab

rebotnix Technologies

Willys Widgets

Glidecam

Metropolis Post

Aerial Filmworks

The Slider

FJS International, LLC

Visual Products

Paralinx LLC

Ritter Battery

Tai Audio

Broadcast Solutions Inc

Technodolly

The Slider

Willys Widgets

Glidecam

FJS International, LLC

Tai Audio

Wooden Camera

Technodolly

Ritter Battery

Abel Cine

Rig Wheels Passport

Metropolis Post

Aerial Filmworks

Media Blackout - Custom Cables and AKS

CineLab

Gamma Ray Digital Inc

New Pro Video - New and Used Equipment

Broadcast Solutions Inc

Visual Products

rebotnix Technologies

CineTape

Paralinx LLC