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In cameras that save in a lossless format, resizing in post-production yields results equal or superior to digital zoom. [citation needed] Lower-end camera phones use only digital zoom and do not have optical zoom, while many higher-end phones have additional rear cameras, including fixed telephoto lenses that allow for the simulation of ...
Video magnifiers are electronic devices that use a camera and a display screen to perform digital magnification of printed materials. The display screen is usually LCD or a similar flat-screen technology (although older video magnifiers have used CRT displays), and the device usually includes a lamp to illuminate the source material.
Live preview on LCD. The concept for cameras with live preview largely derives from electronic TV cameras.Until 1995 most digital cameras did not have live preview, and it was more than ten years after this that the higher end digital single-lens reflex cameras (DSLR) adopted this feature, as it is fundamentally incompatible with the swinging-mirror single-lens reflex mechanism.
We're taking a look at the iPhone's Magnifier app, a super useful free tool that allows you to magnify using your iPhone's camera. The iPhone's Magnifier appWith Magnifier, you can turn your ...
But unlike changes in camera position, zooming does not change the perspective (the relative sizes of near and far objects); it only magnifies or reduces the size of the entire image as a whole. Zooming can either be performed towards longer focal lengths, giving a "zoom in" effect: The filmed object will then increase in apparent size, and ...
Digital photography can also accommodate algorithms that compensate for optical flaws, both within in-camera processors and post-production software. Some photographic zoom lenses are long-focus lenses , with focal lengths longer than a normal lens , some are wide-angle lenses (wider than normal ), and others cover a range from wide-angle to ...
Wider lenses tend to magnify distance between objects while allowing greater depth of field. Another result of using a wide-angle lens is a greater apparent perspective distortion when the camera is not aligned perpendicularly to the subject: parallel lines converge at the same rate as with a normal lens , but converge more due to the wider ...
A Flip video camera, formerly manufactured by Cisco. A video camera is an optical instrument that captures videos, as opposed to a movie camera, which records images on film. Video cameras were initially developed for the television industry but have since become widely used for a variety of other purposes. Video cameras are used primarily in ...