Jump to content


Photo

How are Bolex Viewfinders RATED???

Bolex Super 16mm Viewfinder

  • Please log in to reply
3 replies to this topic

#1 Arthur Sanchez

Arthur Sanchez
  • Basic Members
  • PipPipPip
  • 143 posts
  • Camera Operator
  • Tijeras, NM

Posted 15 October 2017 - 04:44 PM

Hello all you optics Gurus out there...

 

 

It seems that a Bolex can come with one of 3 basic viewfinders 6X, 10X and 13X...

 

What are those ratings based on??? The width of the image???

 

and then if you upgrade the optics... How do you measure the size?

 

HELP!


  • 0

#2 Jean-Louis Seguin

Jean-Louis Seguin
  • Basic Members
  • PipPipPipPip
  • 758 posts
  • Other
  • Montreal, Canada

Posted 16 October 2017 - 09:42 AM

I think it's related to the apparent size of an object when viewed at a distance of 25cm. This would be called 1x. So if you place a frame of 16mm film which has a width of 10.25mm at a distance of 25cm, it will have a width of 1x. A 6x viewfinder would display an image which appears 6 times as wide.
  • 0

#3 Arthur Sanchez

Arthur Sanchez
  • Basic Members
  • PipPipPip
  • 143 posts
  • Camera Operator
  • Tijeras, NM

Posted 17 October 2017 - 01:19 PM

Interesting... thank you... I shall go forth and view!


  • 0

#4 Arthur Sanchez

Arthur Sanchez
  • Basic Members
  • PipPipPip
  • 143 posts
  • Camera Operator
  • Tijeras, NM

Posted 17 October 2017 - 01:22 PM

Jean-Louis, I assume this is looking thru a 50 or 55mm lens?


  • 0



Visual Products

Abel Cine

Wooden Camera

The Slider

Gamma Ray Digital Inc

rebotnix Technologies

Ritter Battery

Paralinx LLC

Tai Audio

Rig Wheels Passport

CineLab

Metropolis Post

CineTape

Media Blackout - Custom Cables and AKS

Glidecam

Aerial Filmworks

Broadcast Solutions Inc

FJS International, LLC

Willys Widgets

Technodolly

New Pro Video - New and Used Equipment

Gamma Ray Digital Inc

Willys Widgets

Wooden Camera

New Pro Video - New and Used Equipment

Aerial Filmworks

FJS International, LLC

Technodolly

Paralinx LLC

Tai Audio

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Abel Cine

CineTape

The Slider

Ritter Battery

Visual Products

Metropolis Post

Rig Wheels Passport

CineLab

Glidecam

Broadcast Solutions Inc