Mount: Micro Four Thirds mount
Focal Length: 12-35mm (35mm camera equivalent 24-70mm)
Maximum Aperture: F2.8
Minimum Aperture: F22
Closest Focusing Distance: 0.15m (at focal length 12-17mm) / 0.25m (at focal length 35mm)
Maximum Magnification: 0.21x / 0.42x (35mm camera equivalent) (at focal length 17mm)
Optical Image Stabilizer: Yes (POWER O.I.S.)
Filter Size: 58mm
Lens Construction: 14 elements in 9 groups (4 aspherical lenses, 1 UED lens, 1 UHR lens)
Nano Surface Coating: Yes
Dust and Splash Resistant: Yes*
Recommended Operating Temperature: -10℃ to 40℃
Standard Accessories: Lens cap, Lens rear cap, Lens hood, Lens storage bag
*Dust and Splash Resistant does not guarantee that damage will not occur if this lens is subjected to direct contact with dust and water.
https://www.panasonic.com/uk/consumer/cameras-camcorders/lumix-camera-lenses/lumix-g-lenses/h-es12035.html#specs