Olympus M.Zuiko Digital ED 12-40mm f2.8 PRO Review
The Olympus M.Zuiko Digital ED 12-40mm f2.8 PRO ($999.99 direct) was launched along with the company's top-end OM-D E-M1($999.00 at Amazon) camera, adding a true professional-level zoom to its Micro Four Thirds lens library. It's a pricey lens, but the constant f/2.8 aperture, sharp optics, and all-weather design justify its cost. It's an easy choice as an Editors' Choice for standard zoom lenses for the Micro Four Thirds system.
The lens($899.00 at Amazon), which is on the large size for the Micro Four Thirds system, measures 3.3 by 2.8 inches (HD) and weighs in at 13.5 ounces. It's compatible with 62mm threaded filters and pairs well with the E-M1 and E-M5, but PEN shooters may find that it's a bit hefty for those slim camera bodies. There's no in-lens image stabilization; Olympus puts that feature into the body of the camera. You can use the lens with a Panasonic Micro Four Thirds camera, but unless you're shooting with the GX7 you'll be without stabilization.
The 12-40mm z...
The Olympus M.Zuiko Digital ED 12-40mm f2.8 PRO lens lives up to its moniker, delivering professional results when paired with a Micro Four Thirds camera.
Maximum f/2.8 aperture throughout zoom range; Very sharp from edge to edge; Focus clutch system; Protected from dust, splashes, and cold temperatures; Minimal distortion
Expensive; Lacks optical image stabilization