A lens adds the following tags to a frame: "lens.focus", "lens.focusSpeed", "lens.initialFocus", "lens.finalFocus", "lens.zoom", "lens.zoomSpeed", "lens.initialZoom", "lens.finalZoom", "lens.aperture", "lens.apertureSpeed", "lens.initialAperture", "lens.finalAperture". More...

#include <Lens.h>

Public Member Functions
	Tags (Frame)
	Construct a lens tags object from a frame.
	Tags (Frame)
	Construct a lens tags object from a frame.
Public Attributes
float	focus
	The average focus setting of the lens over the course of this frame.
float	focusSpeed
	The average speed at which the focus was changing over the course of this frame.
float	initialFocus
	The focus setting at the start of the frame.
float	finalFocus
	The focus setting at the end of the frame.
float	zoom
	The average zoom setting of the lens over the course of this frame.
float	zoomSpeed
	The average speed at which the zoom was changing over the course of this frame.
float	initialZoom
	The zoom setting at the start of the frame.
float	finalZoom
	The zoom setting at the end of the frame.
float	aperture
	The average aperture setting of the lens over the course of this frame.
float	apertureSpeed
	The average speed at which the aperture was changing over the course of this frame.
float	initialAperture
	The aperture setting at the start of the frame.
float	finalAperture
	The aperture setting at the end of the frame.

Detailed Description

A lens adds the following tags to a frame: "lens.focus", "lens.focusSpeed", "lens.initialFocus", "lens.finalFocus", "lens.zoom", "lens.zoomSpeed", "lens.initialZoom", "lens.finalZoom", "lens.aperture", "lens.apertureSpeed", "lens.initialAperture", "lens.finalAperture".

They can be retrieved by name from the frame, or you can construct a Lens::Tags object to grab them.

A lens also adds several tags concerning its static capabilities to each frame, not included in the Lens::Tags object: "lens.minZoom", "lens.maxZoom", "lens.wideApertureMin", and "lens.wideApertureMax". These tags exist in order to place the correct lens metadata in saved image files. minZoom and maxZoom refer to the zoom range of the lens, and wideApertureMin and wideApertureMax give the widest aperture settings at min and max zoom respectively.

Definition at line 258 of file Lens.h.