YONGNUO YN50mm F1.8S DF DSM Full Frame Auto Focus Standard Prime Lens for Sony E-mount Mirrorless Cameras (Black)

Features
1. Dual Fn Function Button, Easier to Operate: The Fn custom function buttons are equipped right above and on the side of the lens, so you can enjoy the professional operation feeling whether shooting horizontally or vertically.
2. Compact and Lightweight, Elaborately Manufactured: The lens adopts the aviation aluminum alloy as the housing main body, and is processed with surface anodic oxidation and sand blasting to make beauty and texture coexist and effectively improves the corrosion and wear resistance at the same time.
3. Equipped with AF/MF Focus Mode Switch: You can quickly switch the focus mode through the AF/MF focus mode switch.
4. Equipped with Quiet DSM Stepping Motor: Digital stepping motor (DSM) has fast start and stop response, high focusing accuracy and quieter focusing action, which is suitable for photo shooting and short film recording.
5. USB Firmware Upgrade: Equipped with the USB Type-C interface, you can download the latest firmware to upgrade the lens, which keeps the lens at its best performance.
6. Metal Bayonet, Gold-plated Contacts: Adopts high-precision metal bayonet and gold-plated contacts, which can effectively improve signal conductivity and corrosion resistance. At the same time, it can maintain reliable communication between the camera and the lens, and realize functions such as auto focus, aperture control, and EXIF information transmission

Specifications
1. Model: YN50mm F1.8S DA DSM
2. Focal Length: 50mm
3. Viewing angle range: Diagonal: 47.82 degrees; Vertical: 27.63 degrees; Horizontal: 40.23 degrees
4. Mount: E Mount
5. Format: Full Frame
6. Optical Structure: 11 elements in 8 groups
7. Aperture Blades: 9 blades
8. Filter Size: 58mm
9. Maximum Aperture: f/1.8
10. Minimum Aperture: f/16
11. Minimum Focus Distance: 0.45m
12. Drive System: DSM stepping motor
13. Maximum Magnification: 0.15x
14. Dimensions (DxL): 68 x 85mm
15. Weight: 395g