Jump to content


Photo

Simple stupid question about fields of view


  • Please log in to reply
4 replies to this topic

#1 Cosmas Demetriou

Cosmas Demetriou
  • Basic Members
  • PipPip
  • 11 posts
  • Other
  • United States

Posted 01 March 2016 - 04:01 PM

Hello,

 

This is a simple question about the fields of view of different camera platforms.From my days as a film student, I was under the impression that a 35mm camera would have a wider field of view than a 16, which in turn had a wider fov than an 8mm and so on.

 

I'm wondering if this is really true. I know the fov is connected to the focal length. The shorter the lens, the wider the fov. Now, I'm starting a project that might be filmed in Super 16 and we're going to be filming in some really tight places.  Bathrooms on location, elevators etc.  At first I thought, hmmm... the Super 16 will be a problem because of the tight spaces but then, it occurred to me that maybe the fov is NOT tighter, but that you just use lenses with shorter focal lengths.

 

For example, the widest lens that one might use with Super 16mm would be much shorter than the widest lens that one might use with Super 35mm.

 

Is this correct? 

 

Thank you.

 

Cosmas Demetriou


  • 0

#2 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 19646 posts
  • Cinematographer
  • Los Angeles

Posted 01 March 2016 - 04:13 PM

Yes, the smaller formats crop the projected image circle of the lens more, so you use shorter focal lengths to achieve the same field of view as a longer lens on a larger format, roughly half the focal length when shooting in 16mm instead of 35mm.


  • 0

#3 Kalle Folke

Kalle Folke
  • Basic Members
  • PipPip
  • 77 posts
  • Other
  • Stockholm

Posted 01 March 2016 - 04:15 PM

Hi,

I'd say shooting wide with Super 16 is not a problem, you just use the right lens. I've just shot some stuff with a 6mm Ultra 16 lens and it's extremely wide…

 

I think this is a great resource to compare the field of view with different formats: https://www.abelcine.com/fov/


  • 0

#4 Cosmas Demetriou

Cosmas Demetriou
  • Basic Members
  • PipPip
  • 11 posts
  • Other
  • United States

Posted 01 March 2016 - 04:17 PM

Wow. That's interesting.

 

So to use extreme examples, if I was making a film in a room (like the movie Room, for example) and I was comparing the fields of view of a 65mm camera and a 16 camera there would be no real difference.

 

Is that true?


  • 0

#5 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 19646 posts
  • Cinematographer
  • Los Angeles

Posted 01 March 2016 - 05:18 PM

Not sure I understand, there's a difference between 65mm and 16mm if you try and use the same lens on both cameras.

 

And there's a difference in aspect ratio, 5-perf 65mm is 2.20 : 1.

 

But you can match the horizontal field of view between 65mm and 16mm if you figure out the correct focal lengths.

 

This is where the concept of crop factor comes in.  For example, the projected width of 5-perf 70mm is 48.56mm.  The Super-16 frame is 12.52mm wide, so the difference in width is 3.88X (divide 48.56 by 12.52).  So you can multiple or divide that crop factor to convert one focal length to another -- for example, if you use a 12mm lens in Super-16, you'd need to use a 47mm lens in 70mm to match horizontal field of view.


  • 1


Metropolis Post

FJS International, LLC

Aerial Filmworks

The Slider

Media Blackout - Custom Cables and AKS

Glidecam

CineLab

Broadcast Solutions Inc

Gamma Ray Digital Inc

Tai Audio

Visual Products

Ritter Battery

Rig Wheels Passport

Paralinx LLC

Technodolly

Willys Widgets

Wooden Camera

rebotnix Technologies

CineTape

Abel Cine

Willys Widgets

Media Blackout - Custom Cables and AKS

Abel Cine

Broadcast Solutions Inc

FJS International, LLC

Aerial Filmworks

Wooden Camera

Glidecam

Metropolis Post

Gamma Ray Digital Inc

CineLab

CineTape

Technodolly

The Slider

Ritter Battery

Visual Products

rebotnix Technologies

Rig Wheels Passport

Tai Audio

Paralinx LLC