Patent: Full frame f/2 zoom, possibly for mirrorless?

[Canon Rumors]

A patent application showing an unusual f/2 zoom from Canon has appeared in Japan (Patent application: 2018-132675). It’s possible that this zoom lens is related to a  mirrorless camera body with its short BF distance.
Canon News tells us that the patent itself deals with a floating focus system to help reduce the size of the lens.

Japan patent application 2018-132675:
Focal distance      90.00 125.01 145.99 109.96 130.49
F number             2.06   2.06   2.06   2.06   2.06
a half field angle  13.52   9.82   8.43  11.13   9.41
Image height        21.64  21.64  21.64  21.64  21.64
Whole length       242.35 242.35 242.35 242.35 242.35
BF                  16.70 1 6.70  16.70  16.70  16.70 
Focal distance      72.03 115.04 145.99  92.39 123.70
F number             2.06   2.06   2.06   2.06   2.06
a half field angle  16.72  10.65   8.43  13.18   9.92
Image height     ...

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[BeenThere]

This would seem to be a portrait zoom.

 

[Maximilian]

Interesting.
I would really like to see something like that in RL.
Esp. lenth, feel in the hand and - of course - IQ.

 

[melgross]

Boy, that’s a lot of elements.

Now that Nikon has announced, they’re being criticized for the new Z mount lens selection. It would be nice if this (these?) lens(es) would be announced at the same time as Canon’s New cameras.

 

[RGF]

very narrow zoom range. Does not interest me, but perhaps this is a technical demonstration, not a real product?

 

[Josh Leavitt]

This would seem to be a portrait zoom.

Most definitely. And I would think it would be an ideal portrait zoom - essentially consolidating the 85mm F/1.8 USM, 100mm F/2 USM, and 135mm F/2L USM into one lens. For the 90-130mm F/2 at least. But the 70-125mm is an interesting focal length as well.

 

[jolyonralph]

A very interesting portrait zoom too. A f/2 zoom of this range is more interesting to me than the f/0.95 manual focus lens that Nikon are launching.

 

[Hesbehindyou]

This is likely just a technical demonstration to illustrate the floating focus mechanism, perhaps chosen because it shows a large size-reduction in the lens i.e. they've chosen a focal range and aperture that most clearly shows the size-reduction benefits of floating focus.

Then again, why make things complicated with all those elements if it's just a paper exercise so maybe this is a lens that's being developed. As others have pointed out, it's perfect for portraits (though maybe I'd like it to be a little longer but that could just be because I've got a large, unflattering nose)

 

[PerKr]

from those figures it looks more like 70-145 than 70-125? am I missing something obvious?

 

[Daner]

I have been tempted by Sigma's 50-100 f1.8 for my 7D Mk. II, but I haven't been convinced. An EF 70-140 f2 from Canon would be more likely to convince me.

 

[Ozarker]

Canon, take my $$$$. Dream zoom for me.

 

[Viggo]

Canon, take my $$$$. Dream zoom for me.

Looks like you can actually get it now

 

[Ozarker]

Looks like you can actually get it now

Hopefully it will be in the 2020 releases. I would take that over any 70-200 f/2.8. I had a feeling there might be something special to match the 28-70. Now I just hope it gets produced. Maybe, just maybe it will be internal zoom also.