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Samsung NX500 - Same 28 MP APS-C sensor as NXI but 4K video is not downsampled from 6.5K so less details and more noise than the NX1 - with this 2.4× crop factor the kit lens become a 38–120mm f8.5–13.4 equivalent for depth of field; 15 min max recording time limit
1-inch Type C Helical Scan or SMPTE C is a professional reel-to-reel analog recording helical scan videotape format co-developed and introduced by Ampex and Sony in 1976. It became the replacement in the professional video and broadcast television industries for the then-incumbent 2-inch quadruplex videotape (2-inch Quad for short) open-reel format.
To achieve EDTV, consumer electronic devices such as a progressive scan DVD player or modern video game consoles must be connected through at least a component video cable (typically using 3 RCA cables for video), a VGA connector, or a DVI or HDMI connector. For over-the-air television broadcasts, EDTV content uses the same connectors as HDTV.
Prices for consumer-grade 4K HDTVs have since lowered and become more affordable, which has increased their prevalence amongst consumers. Computer monitors can use even greater display resolutions. The disadvantage of progressive scan is that it requires higher bandwidth than interlaced video that has the same frame size and vertical refresh ...
On March 14, 1961, Ampex introduced the first helical scan video recorder, the VR-8000, which recorded video using helical scan recording technology on 2-inch tape. The VR-8000 was made using a similar chassis used by Ampex's 2-inch quadruplex VTRs. Unlike the VR-660, it used only one video head on the scanner with a full alpha wrap.
This allows use of the entire width of the tape, storing much more data per inch of tape, compared to the fixed head used in audio tape recording, which records a single track down the tape. The heads move across the tape at the high speed necessary to record the high-bandwidth video signal, but the tape moves at a slower speed through the machine.
How much does the test cost? The Galleri test — which isn’t covered by insurance — doesn’t come cheap. At $949 a pop, it’s out of the price range of most people.
Both used less costly tape, and made just about as good of a picture. Ampex in 1961 made a 2 inch helical scan VTR for a short time, the VR-8000. They also produced another 2" helical VTR, the VR-660, in 1963. Sony also made a 2 inch Helical scan VTR, but it was non-segmented and they sold even fewer of them (in the early 1970s).