Another Canon patent for a Cinema lens, a CN-E 30-160mm f/ 2.8 LS. This optical formula formula refers to a Super35mm sensor, i.e. the sensor used in Canon’s Cinema line-up.
Canon patent for a 50-300mm F4.5-5.6 lens with diffractive optical elements. The optic formula described in the patent appears to refer to APS-C sensor (not full-frame). Hence, the lens may come either for EF-S or EF-M mount. I guess this would be the first APC-S oriented lens with diffractive optics (anyone?).
The more a DSLR is build to last, i.e. is made of metal instead of plastic, the more difficult it gets to add radio devices like GPS or WiFi. This is something Canon explained often.
This Canon patent appears to show a solution for the issue. The GPS module is placed on top of the camera body, where usually the pop-up flash is located. That’s where the Canon EOS-1D X Mark II has the GPS device. The patent does not explicitly mention WiFi but I think it is safe to assume the solution described in the patent would work for WiFi too.
It may be that the patent points to something that has to do with the upcoming EOS 5D Mark IV, which, as it was anticipated first on CW, will most likely have GPS and WiFi on board.
Patent Publication No. 2016-53665
Published 2016.4.14
Filing date 2014.9.4
Canon patent
Magnesium alloy
Providing a GPS module to the finder part
To protect the GPS module in the wireless communication lid made of a synthetic resin material
The GPS module and the warship portion connected by high thermal conduction efficiency copper foil tape, heat away
Something is moving in Canon’s EOS M department. Here we have another Canon patent for an EF-M lens,, a EF-M 9-18mm f/3.5-4.5 STM.
We already have an ultra wide-angle lens for the EOS M system, the EF-M 11-22mm f/4-5.6 IS STM. Will the optic formula described in the Canon patent ever hit the market? Hard to say.
Patent Publication No. 2016-54371
Published 2016.4.14
Filing date 2014.9.3
Example
Zoom ratio 1.90
Wide-angle intermediate telephoto
Focal length 9.22 14.05 17.50
F-number 3.39 4.04 4.63
Half angle of view (degrees) 53.07 44.12 37.91
Image height 12.27 13.63 13.63
Overall length of the lens 89.68 83.60 86.84
BF 14.22 15.78 16.00
Canon patent
Upon correction of the distortion, providing a constraint on stretching amount at each image height
Properly set the curve shape of the distortion aberration
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