Jump to content


Photo

Latitude


  • Please log in to reply
6 replies to this topic

#1 John Rossi

John Rossi

    New

  • Basic Members
  • Pip
  • 2 posts
  • Student

Posted 09 March 2008 - 11:47 PM

Just curious about film latitude. Besides vision 3 where do most stocks hit there white point where detail is lost? I know 4 stops both ways with vision 2 so does that mean no detail is recorded at 3 to 4 stops over? Or after 4 stops you lose your image.
  • 0

#2 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 19759 posts
  • Cinematographer
  • Los Angeles

Posted 10 March 2008 - 12:09 AM

Depends on your image -- is it a shot of a black bowling ball or a white snowball?

Vision-3 has about another stop of overexposure detail compared to Vision-2.
  • 0

#3 John Rossi

John Rossi

    New

  • Basic Members
  • Pip
  • 2 posts
  • Student

Posted 10 March 2008 - 12:55 AM

Thanks.

I know that things of different reflectance will blow out/darker faster then others, but I'm just talking in general. Pretty much things that fall close to middle grey, do they blow out at 4 over?

Quick side question so vision 2 has about 4 stops and 3 has 5. Just want to make sure.
  • 0

#4 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 19759 posts
  • Cinematographer
  • Los Angeles

Posted 10 March 2008 - 01:24 AM

Before we continue, I want you to go this thread:
http://www.cinematog...showtopic=29561

And then suggest a way in which the instructions on the registration page could be written more clearly.
  • 0

#5 Hal Smith

Hal Smith
  • Sustaining Members
  • 2280 posts
  • Cinematographer
  • OKC area

Posted 10 March 2008 - 08:46 AM

And then suggest a way in which the instructions on the registration page could be written more clearly...........

Require that the registrant submit a certificate that they have successfully completed a "Reading is Fundamental" course?
  • 0

#6 Adrian Sierkowski

Adrian Sierkowski
  • Sustaining Members
  • 7117 posts
  • Cinematographer
  • Los Angeles, Ca

Posted 10 March 2008 - 08:49 AM

In terms of registration page, perhaps for username, prompt for a first name and last name? in 2 fields, and then people may be more likely to write it in?
  • 0

#7 Drew Hoffman

Drew Hoffman
  • Basic Members
  • PipPip
  • 57 posts
  • Cinematographer
  • Chicago, IL

Posted 10 March 2008 - 11:43 AM

First, I'd recommend reading up on sensitometry and characteristic curves. You can find find information online, or there's some great information in Cinematography: Theory and Practice by Blain Brown; Practical Cinematography by Paul Wheeler; or Cinematography by Kris Malkiewicz and cinematography.com powerhouse M. David Mulllen, ASC. After that, you can go right to Kodak, or Fuji, or anyone's site and look at their technical data... then you'll be able to find the latitude of any film stock you want. They even make it slightly easier, and you can read them in "Camera Stops" instead of "Log Exposure."

5217_char2.gif
  • 0


Tai Audio

Abel Cine

Wooden Camera

Paralinx LLC

FJS International, LLC

Aerial Filmworks

Metropolis Post

Willys Widgets

CineLab

Broadcast Solutions Inc

Glidecam

Technodolly

CineTape

The Slider

Ritter Battery

Opal

Gamma Ray Digital Inc

Media Blackout - Custom Cables and AKS

Rig Wheels Passport

rebotnix Technologies

Visual Products

The Slider

CineLab

Ritter Battery

Rig Wheels Passport

Tai Audio

Paralinx LLC

Wooden Camera

Abel Cine

CineTape

Visual Products

Willys Widgets

FJS International, LLC

Metropolis Post

Media Blackout - Custom Cables and AKS

Glidecam

Opal

rebotnix Technologies

Technodolly

Aerial Filmworks

Gamma Ray Digital Inc

Broadcast Solutions Inc