OM System
M.Zuiko Digital ED 12-40mm F2.8 PRO II
Micro Four Thirds Mount
IP53 weather-sealed standard zoom with constant F2.8, MSC autofocus, and 0.3× magnification at 40mm.
$1,299
Launch priceReleased Feb 2022
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 12-40mm F2.8 PRO II is 4.3 years newer.
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.
Wins
M.Zuiko Digital ED 12-40mm F2.8 PRO II
Wins
M.Zuiko Digital ED 25mm F1.2 PRO
1 categories tied
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 12-40mm F2.8 PRO II has higher Max magnification (0.3 × vs 0.11 ×)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Max aperture (Wide) (f/1.2 vs f/2.8)
- BM.Zuiko Digital ED 25mm F1.2 PRO has lower Max aperture (Tele) (f/1.2 vs f/2.8)
- AM.Zuiko Digital ED 12-40mm F2.8 PRO II has lower Min focus distance (20 cm vs 30 cm)
- AM.Zuiko Digital ED 12-40mm F2.8 PRO II has lower Weight (382 g vs 410 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareM.Zuiko Digital ED 12-40mm F2.8 PRO II
⌀70 × 84 mm
382 g (0.84 lb / 13.47 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 12-40mm F2.8 PRO II is 3mm shorter than M.Zuiko Digital ED 25mm F1.2 PRO.
M.Zuiko Digital ED 12-40mm F2.8 PRO II is 28 g lighter 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 12-40mm F2.8 PRO II
- ✓
Special elements
Adds 1 EDA, 2 Aspherical, 2 ED…
- ✓
Custom function button
Only M.Zuiko Digital ED 12-40mm F2.8 PRO II supports it
- ✓
Min focus distance
20 cm vs 30 cm — lower is better
- ✓
Max magnification
0.3 × vs 0.11 × — higher is better
- ✓
Weight
382 g vs 410 g — lower is better
- ✓
Length
84 mm vs 87 mm — lower is better
- ✓
Diameter
69.9 mm vs 70 mm — lower is better
Reasons to choose the M.Zuiko Digital ED 25mm F1.2 PRO
- ✓
Special elements
Adds 1 Aspherical, 3 ED, 1 Super ED
- ✓
Max aperture (Wide)
f/1.2 vs f/2.8 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/2.8 — 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 12-40mm F2.8 PRO II
Pros
- ✓Constant F2.8 across 12–40mm (24–80mm equiv.)
- ✓IP53 dust/splash/freeze resistance with ZERO coating
- ✓Compact 382g body with MF clutch and L-Fn button
Cons
- –No lens-based IS — relies on Sync IS in compatible bodies
- –Extending barrel design
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 12-40mm F2.8 PRO II and M.Zuiko Digital ED 25mm F1.2 PRO at major authorized retailers.
OM System M.Zuiko Digital ED 12-40mm F2.8 PRO 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.