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Celestron was the first large scale commercial manufacturer of the Schmidt-Cassegrain telescope, introducing its "C8" 8" diameter 2032 mm focal length, ƒ10 telescope in 1970. [7] The primary innovation Celestron/Tom Johnson devised was a method to produce Schmidt corrector plates using a vacuum to pull the glass blanks into a pre-shaped curve ...
DX-iX (data exchange - information exchange) is an expanded DX encoding system introduced in 1996 which was released as part of the Advanced Photo System (APS), which use a different cartridge and film size, also known as IX240 film. APS film and cameras were marketed with numerous brand names, most including an "ix" to emphasize the ...
For real-time and non-buffered video streaming when the available bandwidth is fixed – e.g., in videoconferencing delivered on channels of fixed bandwidth – a constant bitrate (CBR) must be used. CBR is commonly used for videoconferences, satellite and cable broadcasting. VBR is commonly used for video CD/DVD creation and video in programs.
The AF-S DX Zoom-Nikkor 10-24mm f /3.5–4.5 G ED is a lens manufactured by Nikon for use on Nikon DX format digital SLR cameras. It provides an angle of view on a DX format camera similar to that of a 15-36mm lens on a 135 film format camera.
Nikon uses DX format sensors with slightly different active areas, which is the area where the image is captured, although all of them are classified as APS-C. Image sensors always have additional pixels around the active pixels, called dummy pixels (unmasked, working pixels) and optical black pixels (pixels which are covered by a mask used as a black-level reference).
Like all lenses in the DX format, the 18-55mm casts a smaller image circle than lenses for full-frame 35mm cameras and is therefore only compatible with cameras having APS-C-sized sensors (or vignetting will happen). However, from 24mm onward until 55mm, the image circle will cover the full 35mm frame, and is usable on film.
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3579 S High St, Columbus, OH · Directions · (614) 409-0683