Features: Standard Premier Lens25mm focal length, Micro 4/3 support, compatible with Olympus camera, suitable for landscape, portrait, street snap, night scene photography. F1.7 Large ApertureEven in low light environments, you can produce amazing moments with this camera lens, and the background is creamy and dreamy. Auto Focus/Manual Focus SwitchAuto focus or manual focus can be switched freely. And even in AF mode, the focus ring can be rotated for full-time manual focus. High Precision Stepper MotorEquipped with high speed and high precision stepper motor, cooperate with brand new drive circuit to achieve fast, quiet and precise focusing. 6 Groups & 7 Blades6 groups of 7-blade lens structure, including one ultra-low dispersion lens and two aspherical lenses Specifications: Brand: YONGNUO Focal length: 25mm Angle range: 49.4 diagonal, 30.4 vertical , 39.9 horizontal Lens construction: 6 groups 7 blades Aperture blades: 7 pieces Aperture: F1.7-F22 Mini. Focus Distance: 20cm Max. Magnification: 0.2 times Filter diameter: 52mm Max. Diameter and length: approx. 60.8 * 66.6mm/ 2.4 * 2.6in Item weight: 150g/ 5.3oz Note: The camera shown in the photo is not included. Package List: 1* Camera Lens 2* Lens Caps 1* User Manual (English and Chinese)