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Canon Patents

Patent: Canon EF 35mm f/1.4L II

By Canon Rumors | May 1, 2015

We’ve been told that Canon’s next L lens would be a prime. Most of the people I’ve talked to think that the EF 35mm f/1.4L will be the lens getting the update. There have been a lot of patents in the past for the optical formula, and recently a new one has appeared. Patent Publication Read more…

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Patent: Another 100x Zoom PowerShot

By Canon Rumors | March 8, 2015

Before the Canon PowerShot SX60 HS hit the market last fall, there had been rumblings that it would have a 100x zoom, but it *only* came with 65x zoom which worked out to a focal length of 24-1365mm. There was a patent for a 100x zoom optical formula at that time, but I guess it wasn’t ready for Read more…

Patent: Multi Layer AF Sensor

By Canon Rumors | February 24, 2015

Another autofocus related patent has appeared from Canon. This time in the form of a foveon style multilayer AF sensor. Patent Publication No. 2015-37217 Published 2015.2.23 Filing date 2013.8.12 Canon patent AF sensor In the depth direction, I comprises a first layer, the second layer, the photoelectric conversion portion of the third layer The second Read more…

Patent: Improved EF to EF-M Adaptor

By Canon Rumors | February 24, 2015

A new patent for an EF to EF-M adaptor has appeared. It looks like the new adaptor will have improved AF speed with EF lenses mounted. As many of you know, the current adaptor is pretty sluggish in that regard. The patent makes a point of saying there will be improved performance for video and Read more…

Patent: Canon EF 300mm f/4L IS & Others

By Canon Rumors | February 20, 2015

A patent for a new EF 300mm f/4L IS has appeared. Other optical formulas appearing in the patent are 24mm f/2.8 and 50mm f/1.3 with variable diffractive index elements which help correct some aberrations (thanks Keith). Patent Publication No. 2015-28551 (Google Translated) Published 2015.2.12 Filing date 2013.7.30 Example Example Focal distance Fno. Half angle Image Read more…

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