Specification :
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 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 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.
Closest Focusing Distance: 30 cmThis 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.
1. Air / 2. Nanoparticles / 3. Incident light / 4. Reflected light / 5. Lens / 6. Vapour deposit filmCoating 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.
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.
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.
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.
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.
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 are designed to meet the demands of pros, including a focus ring which provides for comfortable focusing, and an L-Fn button which can be operated as you keep your eye to the viewfinder.
