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Web conferencing. Web conferencing is used as an umbrella term for various types of online conferencing and collaborative services including webinars ( web seminars ), webcasts, and web meetings. Sometimes it may be used also in the more narrow sense of the peer-level web meeting context, in an attempt to disambiguate it from the other types ...
A slide show may be a presentation of images purely for their own visual interest or artistic value, sometimes unaccompanied by description or text, or it may be used to clarify or reinforce information, ideas, comments, solutions or suggestions which are presented verbally. Slide shows are sometimes still conducted by a presenter using an ...
The first auto-everything 35mm point-and-shoot camera with built-in zoom lens, the camera type that dominated the 1990s, was the Asahi Optical Pentax IQZoom (1987, Japan) with Pentax Zoom 35-70mm f/3.5-6.7 Tele-Macro. [113] The next landmark zoom was the Sigma 21-35mm f/3.5-4 (Japan) of 1981. It was the first super-wide angle zoom lens for ...
Tilt-lens photo of a model train. Note how the focus plane is along the train, and how the blurring of the background proceeds from left to right. Tilt–shift photography is the use of camera movements that change the orientation or position of the lens with respect to the film or image sensor on cameras .
A pan-tilt-zoom camera can be controlled remotely via computer software, or manually by a person to recognize patterns and individuals. PTZ cameras can zoom in, pan widely in all directions, and tilt up and down utilizing servomotors to change the image captured. The camera's focus triggers a corresponding motorized zoom-in on the subject of ...
The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject being photographed within a range of constraints that include cost, weight and materials. For many other optical devices such as telescopes, microscopes and theodolites where the visual image ...
Jerry Norman Uelsmann (June 11, 1934 – April 4, 2022) was an American photographer. As an emerging artist in the 1960s, Jerry Uelsmann received international recognition for surreal, enigmatic photographs ( photomontages) made with his unique method of composite printing and his dedication to revealing the deepest emotions of the human ...
List of superzoom compact cameras. Canon PowerShot SX720 HS. This is a list of superzoom compact cameras, also known as travel zoom cameras. [ 1 ][ 2 ] These are small fixed-lens " point-and-shoot " digital cameras that have a high optical zoom ratio. These cameras all include a power zoom lens that retracts into the body when not in use, along ...