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Canon full-frame cameras have used the EF lens mount since 1987. In comparison with that mount, the RF mount's inner diameter is the same at 54 mm. [1] The RF mount's flange focal distance at 20 mm is much shorter than that of the Canon EF and EF-S mounts at 44 mm.
The EOS R8 uses Canon's RF lens mount. It is possible to use older EF and EF-S lenses with the use of an EF/EF-S to RF adapter. [6] At launch it had 38 native lenses available. It has a Full Frame sensor, a focal length multiplier of 1× so lenses will provide their original focal length on R8. [1] [7]
Number of Canon EF lenses sold over time (red), compared with Nikon F mount lenses (blue) The EF mount replaces its predecessor, the FD mount.The standard autofocus lens mounting technology of the time used a motor in the camera body to drive the mechanics of the focus helicoid in the lens by using a transfer lever.
Canon RF 28-70mm F2 L USM; A Canon EF lens mounted to the EOS R via a Mount Adapter EF-EOS R. It is also possible to use older EF and EF-S lenses with one of the three available EF-EOS R mount adapters. [6] Mount Adapter EF-EOS R is the simplest adapter, connecting EF and EF-S lenses to the EOS R body.
An example of a plastic EF-S lens mount. The Canon EF-S lens mount is a derivative of the EF lens mount created for some Canon digital single-lens reflex cameras with APS-C sized image sensors. It was released in 2003. Cameras with the EF-S mount are backward compatible with the EF lenses and, as such, have a flange focal distance of 44.0 mm ...
The EF-M lens mount is one of Canon's two systems for mirrorless cameras, the other being the RF mount. The M system has an 18 mm flange focal distance (compared to 20 mm for RF and 44 mm for EF and EF-S) and a 47 mm throat diameter (compared to 54 mm for EF, EF-S, and RF). As it is designed for use with an APS-C-sized image sensor, it features ...
The EF-S-mount is a newer subset of the EF standard, introduced in 2003. EF-S lenses can only be used on Canon digital cameras that use the APS-C sensor, for example the 400D (EOS Digital Rebel XTi) and the 40D. EF-S lenses can be distinguished by a white dot on the mount ring, as opposed to the red dot seen on standard EF lenses.
The EF8–15mm f / 4L FISHEYE USM is a fisheye zoom lens for Canon digital single-lens reflex cameras (DSLRs) with an EF lens mount.It delivers 180° diagonal angle of view images for all EOS SLR cameras with imaging formats ranging from full-frame to APS-C, and provides 180° circular fisheye images for full-frame EOS models.
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