This is not the first patent for a 35mm lens in the lineup. Previously there were rumors that Canon was field-testing a EF 35mm f/1.4L II lens and it was also said to be announced sometime in late 2014.
Previously the EF 35mm f/1.4L II lens is rumored to be slightly wider than the current version but weighs less and has a new type of coating on at least one of the elements. The lens is also feature a 77mm filter thread.
If we want to speculate about the release date of the lens, than the long rumored EF 35mm f/1.4L II prime should be announced at Consumer Electronics Show CES 2015 which start in the beginning of 2015.
Canon EF 35mm f/1.4L USM II Lens Patent Leaked
The filed patent appears to refer to the successor of the Canon EF 35mm f 1.4L USM which is released in back 1998 and currently priced for $1,479 at Amazon.
Patent Publication No. 2014-202952
- Published 2014.10.27
- Filing date 2013.4.5
- Focal length f = 34.20mm
- Fno. 1.45
- Half angle ω = 32.32 °
- Image height Y = 21.64mm
- Lens length 129.16mm
- BF 39.35mm