With the M.Zuiko 12-40 f2.8 PRO and the MC-14 converter, we have 24-420mm equivalent in a really small package. Paired with the Olympus E-M1 is a top quality equipment.

Weatherproof, all metal, manual focus clutch, f2.8 constant, fast and acurate focus, very interesting lens hood, image quality, very good zoom range; In general, optional MC-14 teleconverter, top quality Olympus lens and corrrect price for the quality

A little heavy (800g) and big (f2.8

The Olympus M.Zuiko ED 40-150mm f/2.8 PRO is, mostly, a highly desirable lens - except for one bug. On the positive side, it is very good if not excellent in the primary image quality metrics. It is very sharp across the focal length range including some greatness in the middle portion.

This telephoto zoom lens for Micro Four Thirds (MFT) system cameras provides an angle of view equivalent to an 80-300mm lens used on a 35mm format camera and sports a constant f/2.8 maximum aperture throughout the zoom range.

If you shoot with a Micro Four Thirds CSC, the Olympus 40-150mm f/2.8 PRO M.ZUIKO is ideal for wildlife, portrait and action photographers. It's the second lens to join the Olympus PRO series alongside the 12-40mm f/2.8 wide-angle (￡799).

This lens is excellent for portrait, street, sports and landscapes. For a lens of this range, it is compact, beautifully balanced and light weight compared to equivalents used on full frame or APS-C DSLR's.

"I've own many micro four thrids lenses since adopting the system. I'll be honest, some haven't met with my expectations. While many lenses in the system are superb by any measure, a large number are what you might call consumer-grade glass good, but not acceptable for professional work by today's...

Field tested this lens photographing sea otters. Took 700 frames with this lens and the OM-D E-M!. Took 700 frames with the Nikon D810 and the new Nikkor 80-400 mm VR II. Could not see and difference between the two set ups in terms of image sharpness, overall image quality, or single shot autofocus...

Super sharp and lightweight

The OM-D E-M1 body does not year support continuous autofocus

Handling and Features Performance Verdict Specification This telephoto zoom lens for Micro Four Thirds (MFT) system cameras provides an angle of view equivalent to an 80-300mm lens used on a 35mm format camera and sports a constant f/2.8 maximum aperture throughout the zoom range.

Excellent sharpness; especially when stopped down a little; Relatively compact and lightweight; Robust build; Dust and splash proof; Quick access for manual focus; Good value; Fast focusing

Manual focus control easily nudged; May be a little large for many MFT bodies; Sharpness could be better towards the edges of the frame at 40mm

This was my xmas present to myself bringing my new OMD-1 into the same league as my beloved E-5. Another amazing lens from the Olympus stable to complement my equipment. Beautiful sharp focus every time even in very low light. Brilliant!!

And Manual Focus Too; Consistent Output; Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Heavy

The Olympus M.Zuiko ED 40-150mm f2.8 PRO ($1,499.99) is a serious lens. It covers a longer telephoto zoom range then the standard pro 70-200mm zooms when paired with a Micro Four Thirds camera, and is incredibly sharp from edge-to-edge throughout the entirety of its range, even at f/2.8.

Edge-to-edge sharpness throughout zoom range; No distortion; Protected from cold, dust, and splashes; Excellent close focus capability; Innovative collapsible hood; Manual focus clutch system; Includes tripod collar

Pricey; Lack of optical stabilization an issue for Panasonic Micro Four Thirds shooters