OM System
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS
Micro Four Thirds Mount
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS — 100–400mm f/5-6.3 for Micro Four Thirds, a popular choice in the om-system lineup.
$1,499
Launch priceReleased Sep 2020
Sony
FE 24-70mm F2.8 GM II
Sony E Mount
The ultimate standard zoom — incredibly sharp, exceptionally compact, and built for professionals.
$2,299
Launch priceReleased Apr 2022
FE 24-70mm F2.8 GM II is 1.7 years newer.
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Wins
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS
Wins
FE 24-70mm F2.8 GM II
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 100-400mm F5.0-6.3 IS has higher OIS effectiveness (3 stops vs 0 stops)
- BFE 24-70mm F2.8 GM II has lower Min focus distance (21 cm vs 130 cm)
- BFE 24-70mm F2.8 GM II has lower Max aperture (Tele) (f/2.8 vs f/6.3)
- BFE 24-70mm F2.8 GM II has lower Max aperture (Wide) (f/2.8 vs f/5)
- BFE 24-70mm F2.8 GM II has lower Length (120 mm vs 205.7 mm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareM.Zuiko Digital ED 100-400mm F5.0-6.3 IS
⌀86 × 206 mm
1120 g (2.47 lb / 39.51 oz)
Credit card
85.6 × 54 mm
for scale
FE 24-70mm F2.8 GM II
⌀88 × 120 mm
695 g (1.53 lb / 24.52 oz)
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS is 86mm longer and 2mm narrower than FE 24-70mm F2.8 GM II.
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS is 425 g heavier than FE 24-70mm F2.8 GM II.
Diameter (⌀) is the maximum barrel width; length is measured from the mount to the front of the lens.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose the M.Zuiko Digital ED 100-400mm F5.0-6.3 IS
- ✓
Special elements
Adds 4 ED, 2 Super HR, 2 HR
- ✓
OIS effectiveness
3 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only M.Zuiko Digital ED 100-400mm F5.0-6.3 IS supports it
- ✓
Diameter
86.4 mm vs 88 mm — lower is better
Reasons to choose the FE 24-70mm F2.8 GM II
- ✓
Special elements
Adds 2 XA (extreme aspherical), 3 Aspherical, 2 ED…
- ✓
Min focus distance
21 cm vs 130 cm — lower is better
- ✓
Max aperture (Tele)
f/2.8 vs f/6.3 — lower is better
- ✓
Max aperture (Wide)
f/2.8 vs f/5 — lower is better
- ✓
Length
120 mm vs 205.7 mm — lower is better
- ✓
Weight
695 g vs 1120 g — lower is better
- ✓
Max magnification
0.32 × vs 0.29 × — higher is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Custom function button
Both support custom function button
Pros & cons at a glance
Editorially curated highlights and trade-offs.
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Relatively heavy for extended handheld use
- –Slower maximum aperture limits low-light performance
FE 24-70mm F2.8 GM II
Pros
- ✓Outstanding sharpness across the entire zoom range
- ✓Remarkably small and lightweight for an f/2.8 zoom
- ✓Four XD Linear focus motors provide blazing-fast AF tracking
- ✓Excellent close-up magnification
- ✓De-clickable aperture ring and customized function buttons
Cons
- –No built-in optical image stabilization (relies on body IBIS)
- –High launch price
- –Aperture ring can be easily bumped if not locked
Decided which one is right for you?
Compare live prices for the M.Zuiko Digital ED 100-400mm F5.0-6.3 IS and FE 24-70mm F2.8 GM II at major authorized retailers.
OM System M.Zuiko Digital ED 100-400mm F5.0-6.3 IS
Sony FE 24-70mm F2.8 GM II
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.