| Name | M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO |
| Manufacturer | Olympus |
| System | Micro Four Thirds |
| Announced | 2013-09-10 |
| Colors | black |
| Material | metal |
| Focal Length | 12-40 mm |
| Focal Length [35mm] | 24 - 0 mm |
| System Multiplier | 2 x |
| Maximum aperture | F 2.8 |
| Minimum aperture | F 22 |
| Magnification | 0.3 |
| Weight | 382 g (13.5 oz.) |
| Diameter | 69.9 mm (2.7 in.) |
| Length | 84 mm (3.3 in.) |
| Filter size | 62 mm |
| Closest focussing distance | 0.2 m |
| Stabilisation | NONE |
| Angle Of View | 84 - 30° |
| Lens Hood | LH-66 |
| Mount material | metal |
| Compatible cameras | Micro Four Thirds |
| Elements and groups | 14 - 9 |
| ED glass | 1 |
| Aspherical glass | 2 |
| High refractive glass | 2 |
| No. of diaphragm blades and type | 7 (Circular aperture diaphragm) |
| Environmentally sealed | Splash / Dust Proof |
| Collapsible | NO |
| ephotozine.com | Olympus M.Zuiko 12-40mm f/2.8 PRO Lens Preview | 2013-09-10 |
| thephoblographer.com | First Impressions: Olympus 12-40mm f2.8 | 2013-09-10 |
| blog.mingthein.com | Lens review: The Olympus 12-40/2.8 M.Zuiko PRO | 2013-09-13 |
| pekkapotka.com | M.ZUIKO 12-40MM F/2.8 PRO HANDS ON PREVIEW | 2013-09-21 |
| pekkapotka.com | E-M1 WITH M.ZUIKO 12-40MM F2.8 PRO: THE FIRST SESSION | 2013-10-26 |
| pixelmania.nl | Olympus M.Zuiko 12-40 mm/F2,8 PRO | 2014-01-12 |
| blog.mingthein.com | Lens review: The Olympus 12-40/2.8 M.Zuiko PRO | 2013-09-13 |
| photoreview.com.au | Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro Lens | 2013-10-07 |
| slrgear.com | Olympus 12-40mm f/2.8 Pro M.Zuiko Digital ED (Tested) | 2013-10-31 |
| tashley1.zenfolio.com | Olympus 12-40mm F2.8 Pro M.Zuiko Review: "The Hammer" | 2013-11-02 |
| camerastuffreview.com | Review Olympus 12-40mm f/2.8 Pro M.Zuiko Digital ED (m43) | 2013-11-28 |
| pattayadays.com | Olympus 12-40mm review | 2013-12-30 |
| focus-numerique.com | Test Olympus M. Zuiko Digital 12-40 mm f/2,8 | 2013-12-24 |
| pixinfo.com | Olympus M.Zuiko Digital ED 12-40mm F2,8 PRO | 2014-01-20 |
| camera.itmedia.co.jp | 明るい標準ズームで撮る旅の景色――オリンパス「M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO」 | 2013-11-22 |
| photographyblog.com | Olympus M.ZUIKO Digital 12-40mm f/2.8 Hands-on Photos | 2013-09-10 |
| dxomark.com | Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO lens review: Pro worthy performer | 2013-11-14 |
| photo.yodobashi.com | Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO | 2013-12-13 |
