OM System
M.Zuiko Digital ED 45mm F1.2 PRO
Micro Four Thirds Mount
90mm-equiv. F1.2 portrait prime with 50 cm close focus, 62 mm filter thread, and IPX1 weather sealing.
$1,199
Launch priceReleased Nov 2017
Sony
FE 50mm F1.4 GM
Sony E Mount
FE 50mm F1.4 GM — 50mm f/1.4 for Sony E, a popular choice in the sony lineup.
$1,799
Launch priceReleased Feb 2023
FE 50mm F1.4 GM is 5.3 years newer.
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Wins
M.Zuiko Digital ED 45mm F1.2 PRO
Wins
FE 50mm F1.4 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- BFE 50mm F1.4 GM has higher Max magnification (0.16 × vs 0.1 ×)
- AM.Zuiko Digital ED 45mm F1.2 PRO has lower Weight (410 g vs 516 g)
- BFE 50mm F1.4 GM has lower Min focus distance (41 cm vs 50 cm)
- AM.Zuiko Digital ED 45mm F1.2 PRO has lower Max aperture (Wide) (f/1.2 vs f/1.4)
- AM.Zuiko Digital ED 45mm F1.2 PRO has lower Max aperture (Tele) (f/1.2 vs f/1.4)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to share
M.Zuiko Digital ED 45mm F1.2 PRO
⌀70 × 85 mm
410 g (0.90 lb / 14.46 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.4 GM
⌀81 × 96 mm
516 g (1.14 lb / 18.20 oz)
M.Zuiko Digital ED 45mm F1.2 PRO is 11mm shorter and 11mm narrower than FE 50mm F1.4 GM.
M.Zuiko Digital ED 45mm F1.2 PRO is 106 g lighter than FE 50mm F1.4 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 45mm F1.2 PRO
- ✓
Special elements
Adds 1 Aspherical, 1 DSA, 3 ED…
- ✓
Weight
410 g vs 516 g — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/1.4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.4 — lower is better
- ✓
Diameter
70 mm vs 80.6 mm — lower is better
- ✓
Length
84.9 mm vs 96 mm — lower is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, ED
- ✓
Custom function button
Only FE 50mm F1.4 GM supports it
- ✓
Min focus distance
41 cm vs 50 cm — lower is better
- ✓
Max magnification
0.16 × vs 0.1 × — higher 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 45mm 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
FE 50mm F1.4 GM
Pros
- ✓Bright f/1.4 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 45mm F1.2 PRO and FE 50mm F1.4 GM at major authorized retailers.
OM System M.Zuiko Digital ED 45mm F1.2 PRO
Sony FE 50mm F1.4 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed August 2026.