• Micro Four Thirds System
  • 50mm (35mm Equivalent)
  • Aperture Range: f/1.2 to f/16
  • Three Extra-Low Dispersion Elements
  • One Aspherical Element, Four HR Elements
  • Z Coating Nano
  • MSC High-Speed Imager AF System
  • Internal Focusing, MF Clutch
  • Weather-Resistant Construction
  • Rounded Nine-Blade Diaphragm
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Delivering both the most beautiful bokeh and outstanding resolution.

Beautiful feathered bokeh from the maximum F1.2 aperture

Competitor product of equivalent specifications : 
Bokeh of the light in the background is clearly circular.


M.Zuiko Digital ED 25mm F1.2 PRO at f/1.2 : 
Bokeh of the light blends with the rest of the background, emphasizing the subject in the foreground.

The M.Zuiko Digital ED 25mm F1.2 PRO delivers beautiful feathered bokeh that blends the image from focused sections to out-of-focus sections and provides a smooth impression to the defocused background, providing more depth to the image by making the subject stand out further.


Beautiful feathered bokeh made possible by an ultra-high precision aberration measurement instrument

Beautiful feathered bokeh was achieved thanks to an ultra-high precision aberration measurement instrument developed incorporating high-precision measurement technologies used in advanced microscope development. This measurement instrument was used in research stages to measure the characteristics of historically acclaimed lenses, which would become the base for newly developed lenses. In development stages, the instrument was used to create a lens design that optimizes the level of aberrations, while virtually eliminating all unwanted aberrations.

The M.Zuiko Digital ED 25mm F1.2 PRO adopts a design which intentionally guides light beams passing on the outside edges of the lens to form an image in the foreground, while gradually tilting the lens as the spherical aberration moves towards the outside edge. Intentionally keeping spherical aberrations results in beautiful feathered bokeh.


High resolution from lavish use of special lenses

 Lens construction diagram (19 elements in 14 groups)

 MTF Chart

The lens consists of 19 elements in 14 groups, with lavish use of special lenses such as 1 Super ED lens and 2 ED lenses. The lenses help suppress unfocused colour bleeding (axial chromatic aberration) common to large-diameter lenses. Also, the colour-canceling effects of E-HR lens and HR cemented lenses effectively correct colour bleeding (magnification chromatic aberration) at the screen periphery. An aspherical lens is placed near the aperture and multiple HR lenses are employed to achieve thorough suppression of comatic aberration common to large-diameter lenses. This advanced optical design results in excellent optical performance that delivers beautiful feathered bokeh and accurate depiction of points even at the widest aperture setting.


Excellent close-up shooting ability

 Closest Focusing Distance : 30 cm

This lens has excellent close-up shooting abilities with a closest focusing distance of 30 cm, and shooting magnification of 0.11x (35mm equivalent: 0.22x). You can get closer to subjects to emphasize background bokeh.


Z Coating Nano for clear image quality

1. Air / 2. Nanoparticles / 3. Incident light / 4. Reflected light / 5. Lens / 6. Vapour deposit film

Coating technology is employed which coats the lens surface with a layer of nanoscale size particles that have air in the centre, resulting in a coating with a similar refractive index as air and reduced surface reflection. Ghosts and flaring are significantly reduced for sharp, clear image quality.


Fast & high-precision AF

MSC mechanism making fast and silent AF possible

 1. Focusing lens

1. Stepping motor
2. Screw drive
3. Shaft

Despite being a large diameter F1.2 lens, a lightweight focusing unit is made possible via the MSC (Movie & Still Compatible) mechanism. A screw drive mechanism is used as the core drive system of the MSC mechanism, and a stepping motor is used as the drive motor.


High-precision AF across all focusing points

 DSLR (Phase detection AF)
Current SLRs are limited to F2.8 light fluxes. Because there is no sensor for focusing at F1.2 light fluxes, AF precision is not guaranteed when a lens brighter than F2.8 is attached.

 OM-D E-M1 Mark II (On-chip Phase detection AF)
On-chip Phase Detection AF has no light flux limitations, making high-precision focusing with all-cross AF possible even when a large-diameter F1.2 lens is attached.

On-chip Phase Detection AF used on the OM-D E-M1 Mark II has no light flux limitations, making all-cross AF possible even when a large-diameter F1.2 lens is attached. This provides coverage for the all focusing points to the edges of the image for high-precision focusing.


Eye Priority AF demonstrates its power during portrait shooting

When used in conjunction with Eye Priority AF on the OM-D E-M1 Mark II, it is possible to capture portraits that are sharply focused on the subject’s eyes.


Excellent mobility

Amazingly compact, lightweight system

 Approx. 1,500 g (Camera Body Full-frame DSLR + 50mm Competitor)

 Approx. 984 g (OM-D E-M1 Mark II + M.ZUIKO DIGITAL ED 25mm F1.2 PRO)

This large-diameter, maximum aperture F1.2 lens is compact and lightweight. It is approximately 410 g, and when paired with the OM-D E-M1 Mark II it creates an amazingly compact lightweight system at only approximately 984 g.


Reliable dustproof, splashproof, and freezeproof construction

Hermetic sealing across the entire lens results in highly reliable dustproof, splashproof, and freezeproof performance. You can feel comfortable shooting anywhere, never worrying about dust, rain, or inclement weather.



Controls that meet the demands of pros

 The focus ring is wider and placed towards the front of the lens barrel making comfortable focusing possible even when paired with the OM-D E-M1 Mark II.
1. Focusing

 The L-Fn button is positioned along the edge of where the concave design ends, making it easy to locate even with your eye to the viewfinder.

 The focal length display is larger for easier identification.

 The Manual Focus Clutch mechanism makes instant switching to manual focus possible by pulling the focusing ring towards you.
1. Distance scale


Optional lens accessories

LH-66B Lens Hood

This is a lens hood which can be used with the M.Zuiko Digital ED 25mm F1.2 PRO lens. The hood release section has been modified so that the lens hood cannot be unintentionally removed.


LC-62F Lens Cap

This is a lens cap that can be attached to the M.Zuiko Digital ED 25mm F1.2 PRO lens. It is compatible with both internal and external tabs.


LSC-0811 Lens Case

This is a lens case for storing the M.Zuiko Digital ED 25mm F1.2 PRO lens. It features excellent cushioning to protect the lens.


PRF-ZD62 PRO Protection Filter

This protection filter is coated with ZERO Coating for reducing flaring due to reflections and ghosts. The edges of the glass are coated black and a satin, glare-reducing black alumite aluminum frame is also used.

  • Pictures are for illustrative purposes only.
  • Screen captures in the monitor are composite images.



Focal Length 25mm (35mm Equivalent Focal Length: 50mm)
Lens Construction 19 elements in 14 groups (1 Super ED lenses, 2 ED lenses, 1 E-HR lenses, 3 HR lenses,1 aspherical lens)
Splashproofing Dustproof and splashproof contsruction
Focusing System High-speed Imager AF (MSC)
Angle of View 47 degrees
Closest Focusing Distance 0.3 m
Maximum Image Magnification 0.11x (35mm Equivalent Max. Image Magnification: 0.22x)
Minimum Field Size 157 x 118 mm
Number of Blades 9 (circular aperture diaphragm)
Maximum Aperture f/1.2
Minimum Aperture f/16
Filter Size Diameter: 62 mm
Dimensions Ø70 x 87 mm
Weight 410 g
Box Contents LH-66B Lens Hood, LC-62F Lens Cap, LR-2 Lens Rear Cap, LSC-0811 Lens Case, instruction manual, warranty card

Depth of field

When focusing on a subject, there is an area behind and in front of the focused point that is also in focus. This area is called depth of field. The amount of area behind a focused point will always be greater than the area in front of the focused point regardless of aperture. Depth of field becomes deeper when the focal length is short (wide-angle lens), the focusing distance is long, and aperture is small.

Depth of field tables (focal length : 25mm)

Columns : aperture values / Rows: focusing distance (m) [1]

0.3 0.4 0.5 0.6 0.7 1 2 3 5
1.2 0.298 to 0.302 0.397 to 0.404 0.494 to 0.506 0.591 to 0.609 0.687 to 0.714 0.972 to 1.030 1.881 to 2.136 2.734 to 3.326 4.289 to 6.000 29.35 to ∞
2.0 0.297 to 0.303 0.395 to 0.406 0.491 to 0.510 0.586 to 0.615 0.680 to 0.721 0.957 to 1.048 1.822 to 2.219 2.607 to 3.538 3.978 to 6.750 18.81 to ∞
2.8 0.296 to 0.304 0.392 to 0.408 0.487 to 0.514 0.580 to 0.621 0.672 to 0.730 0.940 to 1.069 1.757 to 2.325 2.473 to 3.825 3.668 to 7.908 13.32 to ∞
4 0.295 to 0.305 0.389 to 0.411 0.482 to 0.520 0.573 to 0.631 0.661 to 0.744 0.918 to 1.101 1.673 to 2.496 2.306 to 4.326 3.305 to 10.46 9.450 to ∞
5.6 0.293 to 0.308 0.385 to 0.416 0.475 to 0.529 0.562 to 0.644 0.647 to 0.764 0.888 to 1.149 1.568 to 2.786 2.106 to 5.310 2.903 to 19.31 6.703 to ∞
8 0.290 to 0.311 0.379 to 0.424 0.465 to 0.542 0.548 to 0.665 0.627 to 0.795 0.849 to 1.226 1.442 to 3.339 1.879 to 7.866 2.480 to ∞ 4.768 to ∞
11 0.286 to 0.316 0.372 to 0.434 0.453 to 0.561 0.529 to 0.697 0.602 to 0.843 0.800 to 1.356 1.296 to 4.667 1.632 to 25.28 2.061 to ∞ 3.397 to ∞
16 0.281 to 0.323 0.361 to 0.451 0.436 to 0.592 0.506 to 0.749 0.570 to 0.925 0.741 to 1.599 1.136 to 10.89 1.381 to ∞ 1.669 to ∞ 2.427 to ∞
  • 1 The diameter of the permissible circle of confusion is 1/60mm.
  • Specifications are subject to change without notice.


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