1. The 33mm/1.3-inch F1.4 aperture lens is lightweight and small in size, providing flexibility and convenience for portraits, food photography, landscapes and night scenes. 2. Equipped with a wide viewing angle and F1.4 aperture, it can absorb more light, providing an attractive background blur effect. High-quality images can be taken even in low-light environments. 3. The STM motor can control the motor rotation according to the increase and decrease of the pulse signal, and has good start and stop reactivity. It can be driven by a simple mechanical structure. 4. Double aperture adjustment: Automatically adjust the aperture by turning the aperture knob at the lens base to A. Manually adjust the aperture by directly turning the aperture ring at the lens base. 5. It has 10 optical lenses in 9 groups, including 1 ED lens and 1 high-refraction lens. It adopts high-definition nanometer multi-layer coating and a waterproof and antifouling film for the front lens. 6. Can metal mount, all-metal frame structure, ensuring the precision and durability of lens mounting. The aperture adjustment ring has smooth sliding feel. 7. It is compatible with Sony A5000/A5100/A6000/A6100/A6300/A6400/A6500/A6600/A7/A7R/A7S/A7C/A7Ⅱ/A7RⅡ/A7Ⅲ/A7RⅢ/A7RⅣ/A9 cameras. Temporarily not compatible with NEX-3/NEX-5/NEX-5N/NEX-7 cameras