It is a manual digital fixed large aperture lens that offers f/1.6 maximum aperture. There are as many as 12 aperture leaves, which can produce nearly circular speckles. If the aperture is properly reduced, the effect of 14 stars can be achieved. Multi-layer coating of lens, can effectively improve light transmittance and restrain ghost and glare in backlight shooting. Gold plated metal contacts improve signal conductivity and corrosion resistance. Suitable for NEX, M4/3, FX.