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Evaluative-Through The Lens (E-TTL) is a Canon EOS flash exposure system that uses a brief pre-flash before the main flash in order to obtain a more correct exposure. Unlike TTL and A-TTL metering, which use a dedicated flash metering sensor mounted in the base of the mirror box, E-TTL uses the same evaluative metering sensor used for ambient ...
Nikon refers to this technique as "3D matrix metering", although different camera manufacturers use different terms for this technique. Canon incorporated this technique in E-TTL II. More advanced TTL flash techniques include off-camera flash lighting, where one or more flash units are located at different locations around the subject.
Some cameras (Minolta 7, Canon EOS-1V, 1D, 30D/40D, Pentax K-1, Sony DSLR-A700, DSLR-A850, DSLR-A900) also have a few "high-precision" focus points with an additional set of prisms and sensors; they are only active with "fast lenses" with certain geometrical apertures (typically f-number 2.8 and faster). Extended precision comes from the wider ...
The Canon T90, introduced in 1986, was the top of the line in Canon's T series of 35 mm Single-lens reflex (SLR) cameras. It is the last professional-level manual-focus camera from Canon, and the last professional camera to use the Canon FD lens mount .
The Canon EOS 50 (also known as the Elan II in America and the EOS 55 in Japan) is an autofocus, autoexposure 35mm SLR camera. It was aimed at the advanced amateur market, and featured a rear command dial, support for custom functions, and an optional BP-50 battery grip, with a dedicated portrait shutter release. [ 1 ]
By Anthony Deutsch. AMSTERDAM (Reuters) -The head of the chemical weapons watchdog said on Thursday he would ask Syria's new leaders to grant investigators access to the country to continue work ...
The range consisted of the 2 mp DCS 520 and the 6 mp DCS 560. The two cameras were also sold by Canon, as the Canon EOS D2000 and Canon EOS D6000 respectively. [11] Canon's subsequent professional digital SLRs were produced independently of Kodak, and were initially based on the EOS-1V, before moving to custom-designed digital bodies.
WASHINGTON (Reuters) -A large number of Americans' metadata has been stolen in the sweeping cyberespionage campaign carried out by a Chinese hacking group dubbed "Salt Typhoon," a senior U.S ...
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