1. Aperture: F/22 - F1.8
2. Lens structure: 6 elements in 5 groups
3. Aperture blades: 7
4. Applicable models: suitable for Canon SLR cameras
5. Viewing angle: 46 degrees (diagonal), 27 degrees (vertical), 40 degrees (horizontal)
6. Focal length: about 50mm
7. Filter diameter: about 58mm
8. Focusing distance: about 0.35m
9. Weight: about 162g
10. Size: about 7.5 x 5.1cm

Features:
1. F1.8 large aperture, easy to achieve bokeh effect
2. 7-piece aperture blades to help take photos of circular faded dots or 14-star effect
3. Support automatic and manual focus to meet different actual needs
4. With built-in focus indicator
5. Mechanical structure and coating technology, effectively improve focusing accuracy, AF speed and light transmittance, and retain backlight ghost and flare
6. Using chrome-plated metal bayonet, it can be highly matched with the camera body, wear-resistant and corrosion-resistant, and durable
7. Firmware can be designed through the camera