OM System 12-40mm F2.8 PRO II is an Auto Focus (AF)
Standard Zoom lens with FourThirds max sensor coverage and it is designed to be used with Micro Four Thirds mount cameras.
OM replaced the older Olympus M.Zuiko Digital ED 12-40mm f2.8 PRO with this model. Follow the link to read our detailed comparison of these models:
Compare OM System 12-40mm F2.8 PRO II vs Olympus M.Zuiko Digital ED 12-40mm f2.8 PRO
Lenses in Micro Four Thirds Mount with Same Focal and Aperture Range
Lens Mount
OM System 12-40mm F2.8 PRO II is compatible with cameras that have Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are Panasonic GH6, OM System OM-1 and Panasonic GH5 II.
Focal Range
OM System 12-40mm F2.8 PRO II has a focal range of 12-40mm and 3.3X zoom ratio which has a 35mm equivalent focal range of 24-80mm when used on a FourThirds format camera.
Weather Sealings
![https://cameradecision.com/lenses/img/other/OM-System-12-40mm-F2.8-PRO-II-sealing.jpg]()
Weather Sealings of the OM System 12-40mm F2.8 PRO II
OM System 12-40mm F2.8 PRO II is a weather sealed lens which provides an extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have an effective protection, you have to pair the OM System 12-40mm F2.8 PRO II with a weather sealed camera body such as Panasonic GH6, OM System OM-1 and Panasonic GH5 II.
Optical Image Stabilization
OM System 12-40mm F2.8 PRO II doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Panasonic 14-42mm F3.5-5.6 OIS in Micro Four Thirds mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to OM System 12-40mm F2.8 PRO II With Optical Image Stabilization
Zoom Method
OM System 12-40mm F2.8 PRO II features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
OM System 12-40mm F2.8 PRO II has a Max Magnification Ratio of 0.3x and has a minimum focusing distance of 0.2m. For a non-macro lens, the 0.3x is considered a high magnification and will come handy for close-up shots.
Aperture
OM System 12-40mm F2.8 PRO II is a fixed aperture lens with a constant max aperture of f2.8 from 12mm all the way to the 40mm .
Optical Formula
OM System 12-40mm F2.8 PRO II's optical formula consists of 14 elements in 9 groups . Following special elements are used in this design:
- 1 aspherical element
- 1 dual-sided aspherical element
- 2 ED glass elements
- 2 HR glass elements
- 1 EDA glass element
- 1 HD glass element
![https://cameradecision.com/lenses/img/other/OM-System-12-40mm-F2.8-PRO-II-optical-structure.jpg]()
Optical Construction of the OM System 12-40mm F2.8 PRO II
Lens Hood
OM System 12-40mm F2.8 PRO II comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
OM System 12-40mm F2.8 PRO II is available in Black color.
Popular Comparisons of OM System 12-40mm F2.8 PRO II
Here is the eight most popular comparisons of OM System 12-40mm F2.8 PRO II amongst Camera Decision readers.