Jump to content


Photo

Shadow Trick


  • Please log in to reply
5 replies to this topic

#1 Fernando Getz

Fernando Getz
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Sao Paulo, brasil

Posted 02 July 2008 - 03:52 AM

I have to do a DVCam shoot in which I have to achieve the following: In the background, about 45ft away from the camera, there needs to be a fabric or canvas with a white circle with the word RAVEON in black letters inside it. The 10 ft diameter circle should be produced by a 2k junior placed 10ft behind the surface with the letters, so as to be able to see in that circle the shadows of people walking behind the fabric. My question is: what color and/or texture should this fabric or canvas be, so that we only see a white circle with the words where the light hits it and the rest is black? I know the right way to do is is to test different materials but, as usual, the budget doesn't allow for it. Any help will be greatly appreciated. Thanks!
  • 0

#2 Daniel Sheehy

Daniel Sheehy
  • Basic Members
  • PipPipPipPip
  • 407 posts
  • Other
  • Brisbane

Posted 02 July 2008 - 07:18 AM

You do realise that the shadows of the people walking behind the cloth will make it impossible to read the black lettering?
  • 0

#3 Fernando Getz

Fernando Getz
  • Basic Members
  • PipPip
  • 14 posts
  • Cinematographer
  • Sao Paulo, brasil

Posted 02 July 2008 - 04:54 PM

You do realise that the shadows of the people walking behind the cloth will make it impossible to read the black lettering?

Of course, people will pass by only once and the shadows will be a lot smaller than the letters
  • 0

#4 George Ebersole

George Ebersole
  • Sustaining Members
  • 1660 posts
  • Industry Rep
  • San Francisco Bay Area

Posted 02 July 2008 - 05:58 PM

I have to do a DVCam shoot in which I have to achieve the following: In the background, about 45ft away from the camera, there needs to be a fabric or canvas with a white circle with the word RAVEON in black letters inside it. The 10 ft diameter circle should be produced by a 2k junior placed 10ft behind the surface with the letters, so as to be able to see in that circle the shadows of people walking behind the fabric. My question is: what color and/or texture should this fabric or canvas be, so that we only see a white circle with the words where the light hits it and the rest is black? I know the right way to do is is to test different materials but, as usual, the budget doesn't allow for it. Any help will be greatly appreciated. Thanks!

Stage cloth or cheese-cloth is my best guess.
  • 0

#5 Chris Keth

Chris Keth
  • Sustaining Members
  • 4427 posts
  • 1st Assistant Camera
  • Los Angeles

Posted 02 July 2008 - 08:35 PM

I'm not that familiar with common stage lighting techniques but it seems to me that you essentially want a silk (or something similar, polysilk, etc). The cloth has to be substantial enough to backlight and also to paint on for the lettering. If the fabric is too light, the backlighting will overpower the painted design and it won't read. I think cheesecloth would be like this.

If you want a sharp circle, I would get hold of a leko rather than use a 2k. You will much more easily be able to project a sharp-edged circle with that fixture.

Edited by Chris Keth, 02 July 2008 - 08:36 PM.

  • 0

#6 Hemant Tavathia

Hemant Tavathia
  • Basic Members
  • PipPip
  • 23 posts
  • Camera Operator
  • New Jersey

Posted 03 July 2008 - 10:53 PM

if you only have a 2K Junior available, you are going to need some kind of snoot to cast a sharp circular shadow. I'd recommend using the light without its lens, so, open the fresnel lens door and turn on the light. This will give you a good punch. Then Cut a circle on foamcore and place it at a distance from the light using a C-stand to cast a sharp shadow on the canvas. This will also allow you to block light on the canvas.
For the canvas, you should go with a bleached Muslin.
  • 0


Glidecam

Rig Wheels Passport

Media Blackout - Custom Cables and AKS

Visual Products

Aerial Filmworks

Metropolis Post

Ritter Battery

Abel Cine

Paralinx LLC

Broadcast Solutions Inc

New Pro Video - New and Used Equipment

Tai Audio

Willys Widgets

Technodolly

Gamma Ray Digital Inc

rebotnix Technologies

FJS International, LLC

Wooden Camera

CineTape

CineLab

The Slider

Technodolly

Gamma Ray Digital Inc

CineTape

Broadcast Solutions Inc

Wooden Camera

New Pro Video - New and Used Equipment

FJS International, LLC

rebotnix Technologies

CineLab

Paralinx LLC

Willys Widgets

Media Blackout - Custom Cables and AKS

The Slider

Rig Wheels Passport

Ritter Battery

Metropolis Post

Visual Products

Abel Cine

Tai Audio

Aerial Filmworks

Glidecam