Found this photo in my hard drive…so instead of just deleting it…I thought I should at least give it a chance to share to the world…
Yes, I took this photo quite some time ago. 🙂
You can click for very high resolution file (1500×1500 px)
Take note of the circuit/electronic contacts. It is located on the rear element itself. For F1.2 aperture, the lens element has to be very big, hence no space for the electronic contact except on the lens itself. Incredible design.