OM System
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II
Micro Four Thirds Mount
Updated 200–800mm-equiv. telephoto with 5-axis Sync IS, improved AF, and 1125g body.
$1,499
Launch priceReleased Sep 2024
OM System
M.Zuiko Digital ED 25mm F1.2 PRO
Micro Four Thirds Mount
50mm-equiv. F1.2 standard prime with 19-element design, 30 cm close focus, and IPX1 weather sealing.
$1,199
Launch priceReleased Nov 2017
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II is 6.8 years newer.
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Wins
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II
Wins
M.Zuiko Digital ED 25mm F1.2 PRO
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 100-400mm F5.0-6.3 IS II has higher OIS effectiveness (5 stops vs 0 stops)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Max aperture (Tele) (f/1.2 vs f/6.3)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Min focus distance (30 cm vs 130 cm)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Max aperture (Wide) (f/1.2 vs f/5)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Weight (410 g vs 1125 g)
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 II
⌀86 × 206 mm
1125 g (2.48 lb / 39.68 oz)
Credit card
85.6 × 54 mm
for scale
M.Zuiko Digital ED 25mm F1.2 PRO
⌀70 × 87 mm
410 g (0.90 lb / 14.46 oz)
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II is 119mm longer and 16mm wider than M.Zuiko Digital ED 25mm F1.2 PRO.
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II is 715 g heavier than M.Zuiko Digital ED 25mm F1.2 PRO.
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 II
- ✓
Special elements
Adds 4 ED, 2 Super HR, 2 HR
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II supports it
- ✓
Custom function button
Only M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II supports it
- ✓
Max magnification
0.29 × vs 0.11 × — higher is better
Reasons to choose the M.Zuiko Digital ED 25mm F1.2 PRO
- ✓
Special elements
Adds 1 Aspherical, 1 DSA, 3 ED…
- ✓
Max aperture (Tele)
f/1.2 vs f/6.3 — lower is better
- ✓
Min focus distance
30 cm vs 130 cm — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/5 — lower is better
- ✓
Weight
410 g vs 1125 g — lower is better
- ✓
Length
87 mm vs 205.6 mm — lower is better
- ✓
Diameter
70 mm vs 86.4 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Pros & cons at a glance
Editorially curated highlights and trade-offs.
M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II
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
M.Zuiko Digital ED 25mm F1.2 PRO
Pros
- ✓Bright f/1.2 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II and M.Zuiko Digital ED 25mm F1.2 PRO at major authorized retailers.
OM System M.Zuiko Digital ED 100-400mm F5.0-6.3 IS II
OM System M.Zuiko Digital ED 25mm F1.2 PRO
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.