Camera Aperture, Focal Length, and Angle of View

A camera can be thought of as having three main components: the body, lens, and the viewing area (a.k.a. viewing angle).

• Red: Lens or Focal Length.
  
• Green: Camera body or Camera Aperture.
  
• Blue: Viewing area or Angle of View.
  
  Note:

  Please note that the Angle of View is formulated from the Camera Aperture and Focal Length attributes.

The Relationships between Camera Aperture, Focal Length and Angle of View

Adjusting the Camera Aperture (Width, Height and Film Aspect Ratio) will influence the Angle of View but NOT the Focal Length. Think of it like someone switching out the camera body but re-using the same lens.

Adjusting the Focal Length will influence the Angle of View but NOT the Camera Aperture (Width, Height and Film Aspect Ratio) settings. Think of it like someone switching out the lens on the same camera body.

Adjusting the Angle of View will influence the Focal Length but NOT the Camera Aperture (Width, Height and Film Aspect Ratio) settings. iClone makes the assumption that when the user desires a different Angle of View, you just merely want to change out the lens.