Tuesday, June 5, 2012
The Game Is Changing
4K resolution and the ability to pull high-res still frames from full-motion capture are creating a paradigm shift in photography
|This Article Features Photo Zoom|
All-New AF System. The C shares the X's new 61-point High Density Reticular AF, which includes up to 41 cross-type points (with ƒ/4 or faster lenses) and provides new algorithms for improved subject tracking.
All-New Metering System. The C also shares the X's new iSA (Intelligent Subject Analysis) metering system with a 100,000-pixel sensor and its own DIGIC 4 processor. The system incorporates face and color data for more accurate exposures in available light and with flash.
Durable Construction. The C shares the X's durable magnesium-alloy body with dust- and weather-sealing and a 400,000-cycle shutter. An improved Ultrasonic Wave Motion Cleaning system rolls rather than shakes dust particles off the sensor assembly.
Built-In Headphone Jack. The EOS-1D C replaces the EOS-1D X's PC socket for studio flash with a headphone jack for real-time audio monitoring.
Dual CF Cards. Like the EOS-1D X, the EOS-1D C has two CompactFlash card slots. You can choose how you want to use each card.
Big LCD Monitor. The EOS-1D C shares the X's 3.2-inch, 1,040,000-dot Clear View II LCD monitor with reflection resistance.
Wide Lens Line. The EOS-1D C can use more than 60 EF and EF Cinema lenses, with focal lengths from an 8-15mm fisheye zoom and a 14mm superwide-angle to an 800mm supertelephoto. (The APS-H format for 4K video increases the effective focal length by 1.3x.)
|What Is 4K?|
|As its name suggests, 4K is video with a horizontal resolution of around 4000 pixels (full HD has a horizontal resolution of 1920 pixels and "regular" HD, 1280 pixels). For the RED Scarlet-X and the Canon Cinema EOS-1D C, 4K means 4096x2160 video, but there are also other "4K" flavors: 3840x2160 QFHD 4K (quad full HD, also available with the Scarlet-X) is exactly four times the spatial resolution of full HD, with the same 1.78:1 aspect ratio (4096x2160 4K has a slightly wider 1.90:1 aspect ratio). Digital Cinema 4K comes in two flavors: 4096x1714 (2.39:1 aspect ratio) and 3996x2160 (1.85:1 aspect ratio). Academy 4K is 3656x2664 (1.37:1 aspect ratio), and Full Aperture 4K is 4096x3112 (1.32:1 aspect ratio). The aspect ratio is the ratio between the image width and its height.
Obviously, the big benefit of 4K video is better image quality. Just as quadrupling the pixel count of a DSLR can yield higher-quality still images, 4K video produces higher-quality video than 1920x1080 full HD.
Of course, 4K files are four times the size of full HD files, which themselves are quite large, requiring huge hard drives and lots of computer horsepower, and 4K monitors and projectors are large and costly. But 4K likely will replace full HD for pro video in the future, and you can shoot it now.
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