Jump to content


Photo

XDCAM HD and Magnetic HMI


  • Please log in to reply
3 replies to this topic

#1 Roberto Ditleff

Roberto Ditleff

    New

  • Basic Members
  • Pip
  • 9 posts
  • Cinematographer
  • Brazil

Posted 25 December 2006 - 09:36 AM

Hi, we are planning to shoot a feature with XDCAM HD , and for budget reasons all I will have are Magnetic ballast HMIs , since the camera shoot at 23.98 fps ( shutter 1/48) and not 24fps , is very likely that we will have some flicker . Does anybody knows how to deal with that ?
tks
Roberto
  • 0

#2 Stephen Williams

Stephen Williams
  • Sustaining Members
  • 4708 posts
  • Cinematographer
  • Europe

Posted 25 December 2006 - 11:35 AM

Hi, we are planning to shoot a feature with XDCAM HD , and for budget reasons all I will have are Magnetic ballast HMIs , since the camera shoot at 23.98 fps ( shutter 1/48) and not 24fps , is very likely that we will have some flicker . Does anybody knows how to deal with that ?
tks
Roberto


Hi,

Tungsten lights?

FWIW I had a problem shooting 24 FPS 172.8 degree shutter @50 Hz with a Viper, would have worked fine on film!

Stephen
  • 0

#3 David Mullen ASC

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

Posted 25 December 2006 - 12:59 PM

Hi, we are planning to shoot a feature with XDCAM HD , and for budget reasons all I will have are Magnetic ballast HMIs , since the camera shoot at 23.98 fps ( shutter 1/48) and not 24fps , is very likely that we will have some flicker . Does anybody knows how to deal with that ?
tks
Roberto


I've shot many HD features at 23.98P using 60 Hz lighting, not always flicker-free, and even though some people say that you get flicker (which you can see on a waveform apparently) I've never noticed it so it must be pretty darn subtle.

If you do see it, the solution would be to shoot at 1/60th for that shot or use the ECS (Extended Clear Scan) at 60 Hz to remove it. For most types of movement, no one is really going to see the difference between 1/48th and 1/60th.
  • 0

#4 Roberto Ditleff

Roberto Ditleff

    New

  • Basic Members
  • Pip
  • 9 posts
  • Cinematographer
  • Brazil

Posted 25 December 2006 - 06:14 PM

Thanks David , yes its really a good advice.
Tks again
Roberto
  • 0


Rig Wheels Passport

New Pro Video - New and Used Equipment

Gamma Ray Digital Inc

Paralinx LLC

Ritter Battery

rebotnix Technologies

Tai Audio

Broadcast Solutions Inc

The Slider

Media Blackout - Custom Cables and AKS

CineLab

CineTape

Metropolis Post

Aerial Filmworks

Wooden Camera

Visual Products

Glidecam

Willys Widgets

Technodolly

FJS International, LLC

Abel Cine

Metropolis Post

Technodolly

Visual Products

Tai Audio

Ritter Battery

Glidecam

CineLab

rebotnix Technologies

Abel Cine

Broadcast Solutions Inc

CineTape

Media Blackout - Custom Cables and AKS

Willys Widgets

FJS International, LLC

Paralinx LLC

Aerial Filmworks

Wooden Camera

Gamma Ray Digital Inc

New Pro Video - New and Used Equipment

Rig Wheels Passport

The Slider