Jump to content


Photo

ASA rating on DVX100?


  • Please log in to reply
4 replies to this topic

#1 Richard Vialet

Richard Vialet
  • Basic Members
  • PipPipPip
  • 133 posts
  • Cinematographer
  • Hollywood, CA

Posted 13 October 2005 - 05:50 PM

Hey everyone!

I keep seeing posts where DP's mention rating their video camera at a certain ASA? Well what's the ASA rating on a DVX100 with a regular shutter at 48th-60th of a second, in 24p mode? And is there a way to change it?...(my guess is by changing the shutter speed?)
  • 0

#2 Alvin Pingol

Alvin Pingol
  • Basic Members
  • PipPipPipPip
  • 677 posts
  • Student
  • California

Posted 13 October 2005 - 07:39 PM

At 24P and 1/48th shutter, the sensitivity should fall somewhere between 320 and 400ASA.

For every +6dB of gain you add, you will gain one additional stop of exposure, i.e. 320 becomes 640ASA, and so forth. Of course, you get to a point where video noise becomes so prevalent it's no longer worth it. I prefer -3dB, light permitting, which is a half stop loss but a cleaner overall image (not that 0dB is that noisy anyway).
  • 0

#3 Brian Wells

Brian Wells
  • Sustaining Members
  • 438 posts
  • Other

Posted 14 October 2005 - 01:40 AM

I prefer -3dB,

... A nice feature not found on the DVX. Maybe Canon?
  • 0

#4 Alvin Pingol

Alvin Pingol
  • Basic Members
  • PipPipPipPip
  • 677 posts
  • Student
  • California

Posted 15 October 2005 - 05:50 PM

My trusty GY-DV300 has it, I believe the XL2 does, as well... I was under the impression the DVX had -3dB gain as well, perhaps the 100B model does? :huh:
  • 0

#5 Vinod Raja

Vinod Raja
  • Basic Members
  • PipPip
  • 22 posts
  • Cinematographer
  • BANGALORE

Posted 30 November 2005 - 10:32 AM

Hey everyone!

I keep seeing posts where DP's mention rating their video camera at a certain ASA? Well what's the ASA rating on a DVX100 with a regular shutter at 48th-60th of a second, in 24p mode? And is there a way to change it?...(my guess is by changing the shutter speed?)



Hey everyone!

I keep seeing posts where DP's mention rating their video camera at a certain ASA? Well what's the ASA rating on a DVX100 with a regular shutter at 48th-60th of a second, in 24p mode? And is there a way to change it?...(my guess is by changing the shutter speed?)



I have been filming all my documentary projects on 16mm and Beta/ Digibeta. Eight months back i acquired a DVX 100A , also known as DVX 102 A in India. I have caliberated the camera using my Pentax spot meter and a 18% grey card , I rate the camera at 500ASA without ND , using 1/8th ND i rate it at 64 ASA and using 1/64th ND at 10 ASA. I normally use the cine like Gamma from the menu list and tweak the black level a bit . I prefer to film outdoors using the 1/8 ND along with a .3 ND round filter (72mm) fixed to the lens. Thanks best
  • 0


Opal

Tai Audio

The Slider

Paralinx LLC

Media Blackout - Custom Cables and AKS

Technodolly

Wooden Camera

Broadcast Solutions Inc

Willys Widgets

rebotnix Technologies

CineLab

CineTape

Ritter Battery

Rig Wheels Passport

FJS International, LLC

Abel Cine

Glidecam

Visual Products

Metropolis Post

Aerial Filmworks

Gamma Ray Digital Inc

Willys Widgets

FJS International, LLC

rebotnix Technologies

Paralinx LLC

Wooden Camera

Opal

Abel Cine

CineTape

Gamma Ray Digital Inc

Visual Products

Metropolis Post

Aerial Filmworks

Broadcast Solutions Inc

CineLab

Rig Wheels Passport

Tai Audio

Ritter Battery

Technodolly

Media Blackout - Custom Cables and AKS

Glidecam

The Slider