Canon's first full-frame mount in more than 30 years is here, in the shape of the RF-mount. Featuring the same diameter as the venerable EF-mount but with a much shorter flange back distance, RF is designed from the ground up for mirrorless cameras. It's still early days, but four lenses have been debuted alongside the consumer-grade EOS R, providing a tantalizing glimpse into Canon's future ambitions.
Today sees the unveiling of the Canon RF 28-70mm F2L USM, RF 50mm F1.2L USM (pictured below), RF 35mm F1.8 Macro IS STM and RF 24-105mm F4L IS USM. This quartet covers common focal lengths from 24mm to 105mm and includes an exceptionally fast aperture zoom lens, and in a throwback to the early days of the EF system in the late 1980s, a flagship fast 50mm.
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In addition to the four new lenses, Canon has also introduced three EF to RF adapters. The most basic is a simple mount converter, with an additional two adapters which add a customizable control ring (to match the control ring on native RF lenses), and a tray for drop-in filters, respectively. The drop-in filter adapter makes it possible to add a vari ND or circular polarizer to all lenses, including the traditionally awkward super-wides.
Canon promises that the EF-RF adapters will allow the millions of existing EF lenses in circulation to be used "without compromise" on the new EOS R and future RF-mount cameras.
The RF 28-70mm F2L USM will cost $2,999 and will be available in December. The RF 24-105mm F4L IS USM will also be available in December for $1099 ($3399 as a kit with the EOS R). The RF 50mm F1.2L USM will cost $2,299 and will start shipping next month, while the RF 35mm F1.8 Macro IS STM will cost $499 and will be available in December.
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