Jump to content


Photo

Focus Pulling on Arriflex SR2


  • Please log in to reply
2 replies to this topic

#1 Eric F Adams

Eric F Adams
  • Basic Members
  • PipPip
  • 48 posts
  • Other
  • Baton Rouge, Louisiana

Posted 24 December 2011 - 10:18 PM

On a SR2 we are fooling with with have a Cooke 10.4-52mm. I notice forinstance, If my subject is like 12 feet away, and then he approaches to about 6 feet away and we have our focus set for 10 feet...we still received a good picture back from the lab. My question is: Generally, how much "play" (in feet) do you have when the subject is moving closer/further away and the focus is set at a fixed mark? Like in the example above, I was surprised to see the subjects were in focus when we did not pull/push the focus at two separate points.
  • 0

#2 Isaac Hughes Green

Isaac Hughes Green

    New

  • Basic Members
  • Pip
  • 3 posts
  • 1st Assistant Camera

Posted 26 December 2011 - 11:48 PM

The lens doesn't dictate this, it's the lens aperture, camera aperture, focal length, and distance to subject. The glass used in your lens and orientation should only effect the bokeh so you may just be noticing cleaner falloff.

http://www.dofmaster.com/dofjs.html

Edited by Isaac Hughes Green, 26 December 2011 - 11:50 PM.

  • 0

#3 Eric F Adams

Eric F Adams
  • Basic Members
  • PipPip
  • 48 posts
  • Other
  • Baton Rouge, Louisiana

Posted 27 December 2011 - 08:19 PM

The lens doesn't dictate this, it's the lens aperture, camera aperture, focal length, and distance to subject. The glass used in your lens and orientation should only effect the bokeh so you may just be noticing cleaner falloff.

http://www.dofmaster.com/dofjs.html



Thanks Isaac, that link is very helpful.
  • 0


CineTape

FJS International, LLC

Abel Cine

Broadcast Solutions Inc

Aerial Filmworks

Glidecam

Technodolly

The Slider

Ritter Battery

Wooden Camera

CineLab

Media Blackout - Custom Cables and AKS

Gamma Ray Digital Inc

rebotnix Technologies

Paralinx LLC

Tai Audio

Willys Widgets

Visual Products

New Pro Video - New and Used Equipment

Rig Wheels Passport

Metropolis Post

Broadcast Solutions Inc

Ritter Battery

CineLab

CineTape

Rig Wheels Passport

Paralinx LLC

Abel Cine

Wooden Camera

rebotnix Technologies

Willys Widgets

Media Blackout - Custom Cables and AKS

Technodolly

Metropolis Post

FJS International, LLC

Glidecam

Visual Products

Aerial Filmworks

New Pro Video - New and Used Equipment

The Slider

Tai Audio

Gamma Ray Digital Inc