Designed exclusively for Panasonic Lumix cameras, the Leica DG Macro-Elmarit 45mm f/2.8 Aspherical MEGA O.I.S  lens does much more than make small things bigger. Not limited to beautiful soft focusing, it delivers sharp focus to the entire frame from corner to corner.  A true all-round performer that gives you the freedom to create a wide variety of compositions, from portraits to telephoto shots to landscapes.

Designed and manufactured to Leica's stringent performance standards, this high-quality macro lens minimizes distortion, ghosts, flaring and decreased peripheral resolution. With 14 elements in 10 groups, including one aspherical lens and one ED lens, it provides stable contrast and high resolution all the way from 1:1 macro (35mm camera equivalent: 2x) to infinity.
By using a floating Inner Focus system that shifts three groups of lenses, the elaborate focusing that's so essential to a macro lens has become both faster and quieter. Also featured is MEGA O.I.S., which fights blurring from hand-shake to help you capture clear, sharp images with everything from macro and medium-telephoto portraits to wide landscapes and long telephoto shots.

Compatible only with Panasonic Lumix DMC-GH2, DMC-G3 and DMC-GF3 cameras.

Lens Construction: 14 elements in 10 groups (1 Aspherical lens, 1 ED lens)
Mount: Micro Four Thirds mount
Optical Image Stabilizer: Yes
Focal Length: f=45mm (35mm camera equivalent 90mm)
Aperture Type: 7 diaphragm blades / Circular aperture diaphragm
Aperture: F2.8
Minimum Aperture: F22
Closest Focusing Distance: 0.15m / 0.5ft
0.5m / 1.64ft
Maximum Magnification: Approx. 1.0x / 2.0x (35mm camera equivalent)
Diagonal Angle of View: 27°
Filter Size: 46mm / 1.81 in
Max. Diameter: 63mm / 2.48 in
Standard Accessory: Lens Cap, Lens Hood, Lens Rear Cap, Lens Storage Bag
Overall Length (inches): Approx. 62.5mm / 2.46 in (from the tip of the lens to the base side of the lens mount)
Weight: Approx. 0.50 lbs
Dimensions (H x W x D): 4.84'' x 4.03'' x 4.03'' 
Weight: 2.3 lbs