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An LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. It is a modern equivalent of the slide projector or overhead projector .
Canon J (1939) J stands for Junior a non-rangefinder model. Canon J II (1946) Similar if not the same as prewar cameras; Canon S (1946) Similar if not the same as prewar cameras; Canon S II (1946) A redesign with combined range finder and viewfinder functions – two windows; Canon II B (1949) Canon II C (1950) Canon III (1951) Canon IV (1951)
Major technologies are CRT, LCD and its derivatives (Quantum dot display, LED backlit LCD, WLCD, OLCD), Plasma, and OLED and its derivatives (Transparent OLED, PMOLED, AMOLED). An emerging technology is Micro LED. Cancelled and now obsolete technologies are SED and FED.
An electronic viewfinder (EVF) is a camera viewfinder where the image captured by the lens is displayed on a small screen (usually LCD or OLED) which the photographer can look through when composing their shot. [1] It differs from a live preview screen in being smaller and shaded from ambient light, and may also use less power.
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .
It has a 2.5 inch LCD display and 0.44 inch viewfinder, a bulky auto/manual focus button on the front, and a large rubber manual focus ring for quick or pull focusing. It also includes such features as 3 1 ⁄ 4 ″ CCDs , manual and auto focus and white balance, and the ability to attach a wide variety of accessories, making it popular with ...
The viewfinder thus acts as a kind of lens filter. [1] [2] [3] The most popular method involves using a digital camera as the image taking camera and an intact twin-lens reflex camera (TLR) or pseudo-TLR as the "viewfinder" camera. [4] TLRs typically have square waist-level viewfinders, with the viewfinder plane at 90 degrees to the image plane ...
Although these were not as bright and had less resolution than the cinema ILA projectors, they were more portable, starting at 33 lb (15 kg). [15] The early LCoS projectors had their challenges. They suffered from a phenomenon called "image sticking," where the image would remain on the screen after it was supposed to be gone.
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