OM System
M.Zuiko Digital ED 12mm F2
Micro Four Thirds Mount
M.Zuiko Digital ED 12mm F2 — 12mm f/2 for Micro Four Thirds, a popular choice in the om-system lineup.
$799
Launch priceReleased Jun 2012
Sony
FE 50mm F1.2 GM
Sony E Mount
Exquisite resolution and dreamy bokeh combine in a masterful f/1.2 prime.
$1,999
Launch priceReleased Mar 2021
FE 50mm F1.2 GM is 8.8 years newer.
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Wins
M.Zuiko Digital ED 12mm F2
Wins
FE 50mm F1.2 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 12mm F2 has lower Weight (130 g vs 778 g)
- AM.Zuiko Digital ED 12mm F2 has lower Length (43 mm vs 108 mm)
- BFE 50mm F1.2 GM has higher Max magnification (0.17 × vs 0.08 ×)
- AM.Zuiko Digital ED 12mm F2 has lower Min focus distance (20 cm vs 40 cm)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/2)
Key specs at a glance
Size and weight, to scale
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M.Zuiko Digital ED 12mm F2
⌀56 × 43 mm
130 g (0.29 lb / 4.59 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.2 GM
⌀87 × 108 mm
778 g (1.72 lb / 27.44 oz)
M.Zuiko Digital ED 12mm F2 is 65mm shorter and 31mm narrower than FE 50mm F1.2 GM.
M.Zuiko Digital ED 12mm F2 is 648 g lighter than FE 50mm F1.2 GM.
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 12mm F2
- ✓
Special elements
Adds 1 Aspherical, 1 ED, 1 Super ED
- ✓
Weight
130 g vs 778 g — lower is better
- ✓
Length
43 mm vs 108 mm — lower is better
- ✓
Min focus distance
20 cm vs 40 cm — lower is better
- ✓
Diameter
56 mm vs 87 mm — lower is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Control ring
Only FE 50mm F1.2 GM supports it
- ✓
Custom function button
Only FE 50mm F1.2 GM supports it
- ✓
Max aperture (Wide)
f/1.2 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/2 — lower is better
- ✓
Max magnification
0.17 × vs 0.08 × — higher is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
M.Zuiko Digital ED 12mm F2
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
- ✓Native Micro Four Thirds mount compatibility
Cons
- –Third-party or older alternatives may offer better value
FE 50mm F1.2 GM
Pros
- ✓Outstanding sharpness wide open at f/1.2
- ✓Stunningly smooth, circular bokeh with 11 aperture blades
- ✓Extremely quiet and fast autofocus tracking
- ✓Manageable size and weight for an f/1.2 lens
Cons
- –Expensive investment for a single focal length
- –Heavy compared to standard f/1.8 options
- –Some visible vignetting wide open
Decided which one is right for you?
Compare live prices for the M.Zuiko Digital ED 12mm F2 and FE 50mm F1.2 GM at major authorized retailers.
OM System M.Zuiko Digital ED 12mm F2
Sony FE 50mm F1.2 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.