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OM System M.Zuiko ED 100-400mm f/5-6.3 IS II
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OM System · 100-400 mm · Micro Four Thirds mount · Micro Four Thirds

OM System M.Zuiko ED 100-400mm f/5-6.3 IS II

From $1,699.99 — 1 offer
KEY FACTS
BrandOM System
Announcement dateFeb 2025
Released2025
Production started2025
Production statusIn Production
What We Like
+Exceptional 7-stop image stabilization with Sync IS when paired with compatible OM SYSTEM cameras
+Compact and lightweight design (1.125kg) makes it highly portable for a 200-800mm equivalent telephoto zoom
+Excellent image quality with 21-element optical design featuring ED and HR elements for sharp, contrasty images
+Strong weather sealing (IPX1 rated) with fluorine coating, ideal for outdoor and wildlife photography
+Telemacro capability with 1.3m minimum focus distance and 0.57x magnification (35mm equivalent) for close-range shots
+Compatible with OM teleconverters (MC-14 and MC-20) for extended reach up to 1600mm equivalent
Worth Knowing
−Aperture range of f/5.0-6.3 is relatively narrow, requiring higher ISO in lower light conditions
−Some users report mild 'donut' bokeh in out-of-focus highlights with specular reflections
−Teleconverter use, especially the 2x MC-20, results in diminished image quality and difficult handling
−Larger and heavier than some competing options (e.g., Panasonic Leica DG Vario-Elmar 100-400mm)

General

Brand
OM System
Announcement date
ⓘ
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
Feb 2025
Released
ⓘ
Refers to the year this camera was officially made available for sale.
2025
Production started
2025
Production status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Read our notes on general
The M.Zuiko 100-400mm F5.0-6.3 IS II is a remarkable achievement in telephoto lens design that combines impressive reach, excellent image quality, and professional-grade features in a package that remains practical for extended use. The camera can synchronize the lens IS with its built-in IBIS system, boosting stabilization to up to 7 stops. The IPX1 weather sealing and fluorine coating on the front element demonstrate OM SYSTEM's commitment to field usability, making this lens reliable in challenging weather conditions.

Optics

Focal Length (35mm equivalent)
200-800mm
Aperture
f/5.0-6.3 (varies from f/5 at 100mm to f/6.3 at 400mm)
Optical Formula
21 elements in 15 groups (4 ED, 2 Super HR, 2 HR elements)
Min focal length
100 mm
Max focal length
400 mm
Focal range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
100-400 mm
Zoom lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
Yes
Blades
ⓘ
Number of diaphragm blades in aperture
9020
Closest focusing distance
ⓘ
Minimum distance for a subject to be in focus.
130 cm01500

Image stabilization

System
5-Axis Sync IS
Compensation
7.0 stops (with compatible OM SYSTEM cameras)
In Lens IS Alone
4.5 stops

Build

Weather Sealing
IPX1 splash and dust resistant
Front Coating
Fluorine
Tripod Collar
Removable, rotating, Arca-Swiss compatible

Autofocus

Maximum Magnification
0.17x (wide) / 0.57x (tele); 0.34x / 1.15x (35mm equivalent)

Accessories

Includes
Lens hood (LH-76D), front and rear lens caps

Physical

Lens weight
1125 g
Lens length
ⓘ
How long the lens is from front to back.
206 mm
Front filter size
ⓘ
Diameter of attachable filters.
72 mm
Lens mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Micro Four Thirds
Maximum format
ⓘ
Largest sensor size compatible with the lens.
Micro Four Thirds

Features

Weather sealing
ⓘ
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Yes