Epson filed patent 2012-186726 in Japan for a way of displaying manual lens information (aperture, focal length, focusing distance) on the camera LCD screen or viewfinder. This can be achieved with a small camera located above the lens that captures the lens information and shows it on the LCD screen:
This is how the lens information will be displayed on the screen/viewfinder:
The patent mentioned also that Optical Character Recognition (OCR) can be used to automatically load the lens profile in the camera.
