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  2. Canon EOS flash system - Wikipedia

    en.wikipedia.org/wiki/Canon_EOS_flash_system

    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 ...

  3. Canon EOS 50 - Wikipedia

    en.wikipedia.org/wiki/Canon_EOS_50

    The EOS 50 was also the first camera to implement Canon's E-TTL flash system. Canon's previous TTL system metered light reflected from the film onto a sensor during the actual exposure. E-TTL on the other hand fires a low-intensity pre-flash before exposure, and meters the reflected light through the camera's normal metering system.

  4. Through-the-lens metering - Wikipedia

    en.wikipedia.org/wiki/Through-the-lens_metering

    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.

  5. Canon EOS - Wikipedia

    en.wikipedia.org/wiki/Canon_EOS

    Logo. Canon EOS (Electro-Optical System) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. Introduced in 1987 with the Canon EOS 650, all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film.

  6. Canon EOS IX - Wikipedia

    en.wikipedia.org/wiki/Canon_EOS_IX

    The EOS IX features Canon's Multi-BASIS TTL phase detection autofocus system with three focusing points. The Japanese EOS IX E model added Canon's Eye Control focus point selection system; [2] in both, the three focus points can also be selected between manually, or automatically by the camera.

  7. Canon EOS 30V - Wikipedia

    en.wikipedia.org/wiki/Canon_EOS_30V

    These cameras were the replacements for the earlier EOS 30/33 model. [1] Perhaps the most important upgrade [2] compared to the EOS 30/33 was the flash metering; this was the first film camera to support Canon's new E-TTL II flash metering system with compatible EX-series external flashes. [1]

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