YONGNUO YN42.5mm F1.7M II M4/3 Mount Standard Fixed Focal Lens (Black)

Features 1. Appearance: Fully new family style, simple and bright. 2. Driving chip: Upgraded chip,much more silent (aperture and video). Program optimization: Using a new driving algorithm to get better focus accuracy, faster focus speed and effectively solves the noise of the focus motor during video recording. 3. With an F1.7 large aperture, easy to blur the background. 4. AF/MF and supports full time manual focus. 5. STM stepping motor. 6. The closet focusing distance is about 0.30m,and the maximum magnification is about 0.15 times. 7. The structure is composed of 8 groups 9 blades,including 2 ED ultra-low dispersion lenses. Specifications 1. Model: YN25mm F1.7M 2. Bayonet: M4/3 Mount 3. Format: M4/3 Frame 4. Viewing angle range: Diagonal: 29 degrees; Vertical: 18 degrees; Horizontal: 24 degrees 5. Optical Structure: 8 groups 9 blades 6. Aperture blade: 7pcs 7. Lens focal length: 42.5mm (35mm equivalent focal length: 85mm) 8. Maximum Aperture: f/1.7 9. Minimum Aperture: f/22 10. Filter Size: 52mm 11. Minimum Focus Distance: 0.30m 12. Magnification: 0.15x 13. Drive System: Stepper motor 14. Dimensions (DxL): 61.6 x 55.4mm 15. Weight: 146g Compatible Models For Panasonic G100, GH5, G9, G95, G85, GX9, GX85, GF-10, GF-9, GF-8 For Olympus E-M5 Mark II, E-M10 markIII, E-M10 IV, E-PL9, E-PL10, PEN-F