Kuo first mentioned this last month and now said that BE Semiconductor, a Dutch company, will supply the equipment for the aperture blades, which control the amount of light entering the lens.
The lens also benefits from a multi-layer coating to supress flare and ghosting. 9 blades make up the aperture diaphragm, and the minimum focus distance is listed as 0.3m. The Viltrox AF 23mm F1.7 Air ...