That's what a Canon patent application seems to suggest, a 300mm f/2.3 mirror lens. Read…
Here is a Canon patent (United States Patent 9843731) which might show how you may review multiple shots on your Canon camera in the future.
Multiple shots are sequences of photos produced by continuous shooting or bracketed shooting. Usually, sequence of pictures obtained by such “shooting instructions” (that’s patent language) are reviewed in a sequential form (although with some variations). Canon want’s to offer a better experience.
According to the patent literature, there a two ways photos can be displayed for review:
(a) sequentially displaying each image of the generated set of images in a single image display form on a display unit, wherein in the single image display form each image of the generated set of images is switched from one to another, and then, (b) displaying the generated set of images in a multi-image display form, wherein in the multi-image display form each image of the generated set of images are displayed on a same screen of the display unit without displaying any live view image and any image shot in response to any shooting instruction other than the single shooting instruction, wherein each image of the generated set of images displayed in the single image display form is displayed in a larger size on the display unit than each image of the generated set of images displayed in the multi-image display form.
If I got it right, and having a look to the patent illustrations, this means that you’ll see a bunch of photo on your camera display, that you can navigate this photo set though a touch sensitive interface, and the magnify any photo from the set. Have a look at the images below.
Any idea/suggestion/correction is welcome.