Canon patent for EF 600mm f/4 IS DO lens
That may become a killer lens if it ever goes to production. Canon files a patent for a n EF 600mm f/4 IS DO lens. "DO" stays for diffractive optics. Will…
Canon EF 70-200mm F2.8 DO in the works, patent suggests
A Canon patent for a 70-200mm F2.8 DO (Diffractive Optics) lens. The patent was spotted by Egami, and they suggest this lens could hit the market before 2020, as replacement…
Canon patent for 30mm F2.8 DO lens for full-frame mirrorless cameras
Another Canon patent for an optical formula that appears to point to a full-frame mirrorless camera, a 30mm F2.8 DO lens. "DO" stays for diffractive optics. I tell you folks, Canon's…
Canon EF 1000mm F5.6 DO lens coming, filed patent suggests [CW3]
Among all the patents filed by Canon, this may be one that actually could hit the market (in my opinion). The patent refers to an EF 1000mm F5.6 DO (Diffractive…
Canon patent for EF-M 55-300mm f/4.5-6.3 DO IS lens for EOS M system
A long awaited super-zoom lens for the EOS M system with better optics might soon be reality. Canon filed a patent for a EF-M 55-300mm f/4.5-6.3 DO IS lens, featuring diffractive…
Canon patent for EF-M 600mm f / 5.6 DO IS lens
Canon filed a patent for a EF-M 600mm f / 5.6 DO IS, a lens with diffractive optics for the EOS M system. Patent Publication No. 2015-215437 Published 2015.12.3 Filing date 2014.5.9…
Canon 400mm f/4 DO IS II Review (Imaging Resource)
SLRGear posted their review of Canon's new 400mm f/4 DO IS II lens, announced last September for Photokina. Some excerpts from the review: On a full-frame body, the Canon 400mm…
Canon Announces Development of New 100-400mm DO Lens, And More DO and EF-M Lenses
Canon's new EF 40mm f/4L IS DO II (Adorama | B&H Photo) c|net posted an article about Canon and Photokina 2014. There are snippets of an interview with Canon technical advisor Chuck…
Canon Patent For 400mm f/4 IS DO Lens
Egami (translated) spotted a patent filed by Canon for a 400mm f/4 IS DO (diffractive optics) lens. Patent Publication No. 2014-109700 Publication date 2014.6.12 Filing date 2012.12.3 Example 1 Focal…
Four New Canon Telephoto Lens Patents: 2 x 400mm f/4, 600mm f/4 and 800mm f/5.6, all with macro)
Once more Egami (translated) spotted interesting new patents filed by Canon. A 400mm f/4 DO macro 1:1.4, a 400mm f/4 DO macro 2:1, a 600mm f/4 macro 1:1 and an…
Canon made 90 million EOS cameras and 130 million EF lenses, new milestone
Canon celebrates significant milestone with production of 90 million EOS series cameras and 130 million interchangeable EF lenses 17th October 2017- Canon Inc. announced today that the Company has reached…
Canon contributes to cosmological observation by expanding the range of observable infrared frequencies
Canon plans to develop an immersion grating from materials suitable for frequencies close to visible light (0.8–1.2 μm). With the successful development of its InP immersion grating, the Company is one…