Jump to content


Photo

getting rid of crop factor


  • Please log in to reply
1 reply to this topic

#1 Lucas Hubbard

Lucas Hubbard

    New

  • Basic Members
  • Pip
  • 8 posts
  • Student

Posted 20 September 2013 - 03:33 PM

Is it possible to create a focal reducer that gets rid of crop factor of a dslr and if so why aren't they on the market.


  • 0

#2 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 20074 posts
  • Cinematographer
  • Los Angeles

Posted 20 September 2013 - 05:27 PM

DSLR's come in APS-C and FF35 formats, so I assume you mean the crop factor of an APS-C DSLR?

 

The primary reason people don't like this crop factor business is that they are arbitrarily hung up on numbers.  What difference does it make, honestly, in terms of field of view if you use a 35mm lens on an APS-C camera / Super-35 when you'd use a 50mm lens on a FF35 camera?  Are people so hung up on the number 50 that they can't stand using the number 35? When I shoot 35mm movie film, I don't wish I had some sort of device that made the focal lengths behave like they were on a VistaVision camera.  

 

I honestly don't understand this consternation over crop factors unless this is a financial issue of already owning a certain set of focal lengths.  Otherwise, you just use the focal length that gets you the field of view you want for the format you are shooting. You like the view of a 50mm lens on a FF35 camera, use a 35mm lens on an APS-C camera.  Otherwise you're asking for a device that turns a 50mm lens into a 35mm lens when you put it onto an APS-C camera, which doesn't make much sense unless you don't own a 35mm lens (essentially the adaptor would be a wide-angle attachment, so you'd rather screw on a 1.5X wide-angle attachment to a 50mm lens rather than use a 35mm lens?)

 

Also, as someone who comes out of 35mm cinematography, I have never felt the need to relate everything to the field of view that focal lengths give me an a full-frame 35mm still camera.


  • 0


rebotnix Technologies

Tai Audio

Wooden Camera

Technodolly

Ritter Battery

Metropolis Post

FJS International, LLC

Paralinx LLC

CineLab

Broadcast Solutions Inc

Media Blackout - Custom Cables and AKS

Rig Wheels Passport

Abel Cine

New Pro Video - New and Used Equipment

The Slider

Visual Products

CineTape

Aerial Filmworks

Gamma Ray Digital Inc

Willys Widgets

Glidecam

FJS International, LLC

Rig Wheels Passport

Visual Products

rebotnix Technologies

Willys Widgets

Technodolly

Tai Audio

New Pro Video - New and Used Equipment

Paralinx LLC

Media Blackout - Custom Cables and AKS

The Slider

Metropolis Post

Abel Cine

Ritter Battery

CineTape

Gamma Ray Digital Inc

Glidecam

CineLab

Broadcast Solutions Inc

Aerial Filmworks

Wooden Camera