This used a pre-flash for advanced metering, and used the autofocus system to judge where the main subject was for more accurate exposure. A-TTL largely fell out of favor, and was replaced by E-TTL (Evaluative TTL). This system was carried over into the early EOS cameras wholesale. It also introduced the A-TTL (Advanced TTL) system for better flash exposure in program mode, using infrared preflashes to gauge subject distance. This was the first Canon camera with through-the-lens (TTL) flash metering, although other brands had been metering that way for some time. The basic EOS flash system was actually developed not for the first EOS camera, but rather for the last high-end FD-mount manual-focus camera, the T90, launched in 1986. The flash system in the EOS cameras has gone through a number of evolutions since its first implementation. The EOS R full frame camera introduced a new lens mount to the system – the RF mount.Ī Speedlite 550EX, an early E-TTL flash from 1998 Īt the heart of the system is the EF lens mount, which replaced the previous FD lens mount, which mainly supported only manual-focus lenses. It competes primarily with the Nikon F series and its successors, as well as autofocus SLR systems from Olympus Corporation, Pentax, Sony/ Minolta, and Panasonic/ Leica. The EOS emblem was created using Handel Gothic typography. EOS is also the name of the goddess of dawn in Greek mythology, which further signifies the design's generational stature. The development project was called "EOS" (Electro Optical System).
In 2018 the system was further extended with the introduction of the EOS R camera, Canon's first full frame mirrorless interchangeable lens system.
The EOS line is still in production as Canon's current digital SLR (DSLR) range, and, with the 2012 introduction of the Canon EOS M, Canon's mirrorless interchangeable-lens camera (MILC) system. Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. In 2000, the D30 was announced, as the first digital SLR designed and produced entirely by Canon. 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. Canon EOS ( Electro-Optical System) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc.
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