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The Rolleiflex SLX is a line of medium format single lens reflex cameras made by Rollei, in regular production starting from 1976.The SLX incorporated electronic autoexposure and motorized film transport, competing directly with the integrated-motor Hasselblad 500EL/M and effectively displacing the earlier Rolleiflex SL66 line, although the older camera continued to be produced.
Wireless security cameras are closed-circuit television (CCTV) cameras that transmit a video and audio signal to a wireless receiver through a radio band. Many wireless security cameras require at least one cable or wire for power; "wireless" refers to the transmission of video/audio.
In many details the camera retained the look of the original, including a waist-level viewfinder and a crank to prepare the camera for the next shot. As the name implies, the camera was a digital reproduction, with the "viewing" lens being a dummy. The camera had a 2 megapixel CMOS sensor in the square format of the traditional TLR.
Analogue video senders have the advantage of low manufacturing costs as the audio and video signals are simply modulated onto a carrier at 2.4 GHz or 5.8 GHz.They do, however, have the adverse effect of causing reduced bandwidth to local Wi-Fi networks and, in some cases, Wi-Fi networks can cause picture interference on the video sender signal.
Long-range optical wireless communication or free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking over long distances. "Free space" means air, outer space, vacuum, or something similar.
Rollei was a German company that established a worldwide reputation with the Rolleiflex, a twin-lens reflex camera.. Rollei was founded in 1920 as the Werkstatt für Feinmechanik und Optik, Franke & Heidecke in order to make a twin-lens reflex camera.
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