CANON's New dual fish eye lens is coming very soon ( Patent Submitted )
There's always the feeling I get when the amount of patent applications start to reach a tempo that perhaps it's a sign that Canon is about to do something. Mind you, Canon has trolled me in the past with this, so anything is possible.
Here's another patent application that discusses an APS-C dual fish eye lens. We can determine that it's for APS-C because the APS-C sensor is generally 23mm in width, and that means each half's image circle has to fit into 12mm or less. With a little fudge factor and light bleeding, that would mean that each image half height would have to be around 5mm.
The one thing I noticed was that this wouldn't give a full 180 degree field of view, but a more relaxed 144 degree. So, I'm not sure it would make it into an actual product since I do believe Canon would prefer to have a full 180 degree field of view (To calculate this, double the half angle of view).
Canon RF-S 3.8mm F3.5 Dual Fisheye
Focal length 3.86
F number 3.77
Half angle of view (°) 72.0
Image height 4.85
Lens total length 95.47
BF 18.86
There is also a full frame embodiment that looks very much like the current production Canon RF 5.2mm F2.8L Dual Fisheye lens.
As with all patent applications, this may never end up in an actual patent, or product but is a look into Canon's ongoing research.
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