F1.8 large aperture,virtual background, which makes photography with more fun. support auto focus and manual focus mode, full-frame and aps-c format cameras, 5 groups 6 slices lens structure supports m/av/tv/p and other camera shooting modes,and can be displayed the aperture data in the exif informatio closest focusing distance:0.45 meter maximum magnification and field of view:0.15×160×240mm (when located to 0.45 meter)