Thin Lens

The Thin Lens camera is the most common camera type. It represents a normal camera view (Figure 1).

Figure 1: The Thin Lens camera type

Thin Lens Camera Parameters

Orthographic - If enabled, the camera shows an Orthographic view. If disabled, the camera shows a Perspective view.

Physical Camera Parameters
- Sensor Width - The width of the sensor or film in millimeters.
- Focal Length - The focal length of the lens in millimeters.
- F-Stop - This is the aperture-to-focal-length ratio.

Viewing Angle
- Field of View - Sets the horizontal field of view for the camera in the scene, measured in degrees. This functions much like a variable zoom camera lens.
- Scale of View - Sets the width of the Orthographic view of the camera, measured in meters.
- Distortion - Adjusts the spherical and cylindrical distortion. The rendered image displays the entire sphere, and uses equidistant cylindrical projection, also known as lat-lon projection.
- Lens Shift - This is useful for architectural rendering, when rendering tall buildings or structures from a similar height as the human eye. This parameter helps keep the vertical lines parallel.
- Perspective Correction - If the up-vector is vertical, enabling this option keeps vertical lines parallel.
- Pixel Aspect Ratio - Allows you to stretch or squash the Depth of Field disc and render it to a non-square pixel format (NTSC or PAL).

Clipping
- Near Clip Depth - Distance from the camera to the near clipping plane, measured in meters.
- Far Clip Depth - Distance from the camera to the far clipping plane, measured in meters.

Depth of Field
- Auto-Focus - If enabled, the focus is kept on the closest visible surface at the center of the image, regardless of the Aperture, the Aperture Edge, and Focal Depth values.
- Focal Depth - The depth of the area in focus, measured in meters.
- Aperture - The camera lens opening's radius, measured in centimeters. Choosing a low value creates a wide depth-of-field, where everything is in focus. Choosing a high value creates a shallow depth-of-field, where objects in the foreground and background are out of focus.
- Aperture Aspect Ratio - This allows you to stretch and squash the depth-of-field disc.
- Aperture Edge - Controls aperture edge detection at all points within the aperture, and modifies the bokeh effect. The lower values produce more pronounced edges to out-of-focus objects affected by a shallow depth-of-field, such as objects in the foreground and background. A high value increases the contrast.
- Bokeh Side Count - The number of edges making up the bokeh shape.
- Bokeh Rotation - The bokeh shape orientation.
- Bokeh Roundedness - The roundedness of the bokeh shape's sides.