Fangrui Product Details 1. Yongnuo Yn50mm F1.4c F1.4 Lens Large Aperture Auto Focus Lens For Canon(black) 2. F1.4 Bright & Large Aperture: Real Bokeh Background Blur Helps To Highlight The Subject Easily. Even In Low Light Environment, You Can Take Photo With Low Sensitivity And Relatively High Shutter Speed. 3. Electromagnetic Aperture: Support Mavtvpb Shooting Modes. 4. 7pcs Diaphragm Blades: Help To Take Picture Of Circular Defocused Spots Or 14-star Effect. 5. Live View Focusing(lv): When Lv Is On, It Can Focus From Special Angles, Or Focus Precisely From The Broadened View On The Display Screen. 6. Auto & Manual Focus: This Can Meet Different Shooting Needs. And There Is Built-in Focus Distance Indicator To Help You Judge The Focusing Distance In Manual Focus Mode. 7. Glass Optical Lens, Multi-layer Coating: Effectively Increase Light Transmittance And Control Backlight Ghost Image And Glare. 8. Gold-plated Contact, High-accuracy Chrome-plated Metal Mount: It's Wearable, Corrosion-resistant, And Highly Consistent With The Camera. 9. Usb Firmware Upgrade: You Can Download The Latest Firmware And Upgrade This Lens Through The Usb Port To Keep The Performance And Compatibility Of This Lens.