Canon patent application 2019-0113711 (USA) describes the optical formula for an RF 50mm f/1.8 and RF 28mm f/1.8 lens, both for the Canon EOS R full frame mirrorless system.
Focal length 48.50 F-number 1.85 Half angle of view (degrees) 24.04 Image height 21.64 Total lens length 95.00 BF 15.80
Focal length 28.80 F-number 1.85 Half angle of view (degrees) 36.91 Image height 21.64 Total lens length 80.30 BF 7.00
It’s likely Canon will launch these non-L lenses sooner than later. Both are popular focal lengths on full frame, and it’s also likely Canon is set to offer some less expensive (aka budget) lenses for the EOS R system.
More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production in the next few years are these:
Sony E, Canon RF and Nikon Z-Mount Full-Frame Lens
Aperture Range: f/0.95 to f/16
Four Extra-Low Dispersion Elements
One Ultra High Refraction Element
Stepless, Silent Aperture Control
Manual Focus Design
Depth of Field and Distance Scales
Minimum Focusing Distance: 1.6′
ZY Optics released the Mitakon Speedmaster 50mm f/0.95 III for Canon RF, Nikon Z and Sony FE mounts.
ZY Optics releases the Mitakon Speedmaster 50mm f/0.95 mark III, designed for Sony FE, Canon RF & Nikon Z cameras
Shenyang China, Apr 17, 2019 – Zhongyi Optics (ZY Optics) have released the new Mitakon Speedmaster 50mm f/0.95 version III for full frame Sony E, Nikon Z and Canon RF cameras. Offering a natural 50mm perspective along with an ultra-fast f/0.95 maximum aperture, the Mitakon 50mm f/0.95 is a compact prime characterized by its bright f/0.95 aperture to suit working in low-light conditions. It also affords a great degree of control over depth-of-field for isolating subjects from the background and producing selective focus effects. The new version III features a new optics design which offers a slightly more compact size and a better flare resistance. A carefully-designed 10 elements in 7 groups optics system with 1pc of HRI (High Refractive Index) & 5pcs of UD (Ultra-low dispersion) elements successfully minimizes the chromatic aberrations and delivers exceptional image quality. An eleven-blade diaphragm helps to produce a softly diffused out-of-focus rendering (bokeh). The enclosure of the lens is made of metal to strengthen its durability.
Pricing & Availability Mitakon Speedmaster 50mm f/0.95 III is now available to ship and purchase at ZY Optics official website (http://www.zyoptics.net/). The Recommended Retail price (before tax) is USD 799/pc.
About ZY Optics Shenyang Zhongyi Optical and Electronic Company (ZY Optics) is a leading Chinese camera lens & adapters manufacturer. We currently manufacture lenses and lens turbo adapters under the brand name of ‘Mitakon’ & ‘Zhongyi’. For more information about Shenyang Zhongyi Optical and Electronic Company Limited and our products information, visit our official website http://www.zyoptics.net