Jump to content


Photo

Extremely shallow depth of field


  • Please log in to reply
2 replies to this topic

#1 William Middleton

William Middleton

    New

  • Basic Members
  • Pip
  • 2 posts
  • Other

Posted 07 March 2013 - 04:12 PM

My apologies if this is a dumb question or has already been covered--does anyone know how the extremely shallow depths of field are attained in modern feature films today?  This 'style' seems to be very popular at the moment; I've seen it in a number of films recently, one of which is 'Side Effects'. There were even a few moments in the movie where everything in the scene was out of focus until the actor moved a literally just a few inches and came into focus.  What exactly is causing this interesting effect?  Is it a particular Lens? Camera?  Some combination of the two?  Is it a result of newer lens/camera technology or has this type of DOF always been possible?


  • 0

#2 Travis Gray

Travis Gray
  • Basic Members
  • PipPipPip
  • 209 posts
  • Cinematographer
  • Boston, MA

Posted 07 March 2013 - 04:18 PM

Check out a depth of field calculator online or an app (probably should just link to one: http://www.dofmaster.com/dofjs.html)

 

It's a combination of focal length, aperture, and sensor size.

 

Big sensor, long focal length, and wide open aperture gets you a shallow depth of field, plus distance to object factors in as well.

 

So on a Super35 sensor, 85mm, f/2.8, and 5ft away = .14ft (too lazy to convert haha) depth of field.


  • 0

#3 William Middleton

William Middleton

    New

  • Basic Members
  • Pip
  • 2 posts
  • Other

Posted 07 March 2013 - 04:49 PM

Thanks.  That helps alot.


  • 0


rebotnix Technologies

Metropolis Post

Glidecam

CineTape

Willys Widgets

Gamma Ray Digital Inc

Tai Audio

New Pro Video - New and Used Equipment

Rig Wheels Passport

The Slider

Technodolly

Aerial Filmworks

Broadcast Solutions Inc

CineLab

FJS International, LLC

Ritter Battery

Media Blackout - Custom Cables and AKS

Visual Products

Abel Cine

Wooden Camera

Paralinx LLC

Broadcast Solutions Inc

Rig Wheels Passport

Wooden Camera

Gamma Ray Digital Inc

New Pro Video - New and Used Equipment

The Slider

Glidecam

CineLab

Ritter Battery

Tai Audio

FJS International, LLC

Media Blackout - Custom Cables and AKS

Technodolly

Willys Widgets

Visual Products

Aerial Filmworks

CineTape

Paralinx LLC

rebotnix Technologies

Abel Cine

Metropolis Post