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Illustration of a simple three-axis gimbal set; the center ring can be vertically fixed. A gimbal is a pivoted support that permits rotation of an object about an axis. A set of three gimbals, one mounted on the other with orthogonal pivot axes, may be used to allow an object mounted on the innermost gimbal to remain independent of the rotation of its support (e.g. vertical in the first ...
Also may mean "Perspective Control" for a lens that has the ability to shift to tilt to control linear perspective in an image. May also stand for personal computer in conjunction with digital photography. PDAF: Phase-detection autofocus. One of the mechanisms of automatic lens focusing. PF: Purple fringing. A form of chromatic aberration in ...
Gimbal lock is the loss of one degree of freedom in a multi-dimensional mechanism at certain alignments of the axes. In a three-dimensional three-gimbal mechanism, gimbal lock occurs when the axes of two of the gimbals are driven into a parallel configuration, "locking" the system into rotation in a degenerate two-dimensional space.
Animation showing the rolling shutter effect A de Havilland Canada Dash 8 Q-400 six-blade propeller, with severe rolling-shutter distortion from a Pixel 3 camera A Eurocopter EC-120 helicopter – the rotor blades seem to be swept back more than usual due to the rolling-shutter effect.
With popular photo apps like Instagram, Snapchat and Flickr, it's pretty safe to say that most of us are tapping into some seriously ambitious photography skills. Because of apps such as these ...
The word "photography" was created from the Greek roots φωτός (phōtós), genitive of φῶς (phōs), "light" [2] and γραφή (graphé) "representation by means of lines" or "drawing", [3] together meaning "drawing with light". [4] Several people may have coined the same new term from these roots independently.
Other head types include the gimbal, fluid, gear, alt-azimuth, and equatorial heads. Fluid heads and gear heads move very smoothly, avoiding the jerkiness caused by the stick-slip effect found in other types of tripod heads. Gimbal heads are single-axis heads used in order to allow a balanced movement for camera and lenses. This proves useful ...
The term "forward-looking" is used to distinguish fixed forward-looking thermal imaging systems from sideways-tracking infrared systems, also known as "push broom" imagers, and other thermal imaging systems such as gimbal-mounted imaging systems, handheld imaging systems, and the like. Pushbroom systems typically have been used on aircraft and ...