OM System
M.Zuiko Digital ED 8mm F1.8 PRO
Micro Four Thirds Mount
M.Zuiko Digital ED 8mm F1.8 PRO — 8mm f/1.8 for Micro Four Thirds, a popular choice in the om-system lineup.
$1,099
Launch priceReleased May 2016
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 4.8 years newer.
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Wins
M.Zuiko Digital ED 8mm F1.8 PRO
Wins
FE 50mm F1.2 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 8mm F1.8 PRO has lower Min focus distance (12 cm vs 40 cm)
- AM.Zuiko Digital ED 8mm F1.8 PRO has lower Weight (315 g vs 778 g)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/1.8)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/1.8)
- AM.Zuiko Digital ED 8mm F1.8 PRO has lower Diameter (62 mm vs 87 mm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareM.Zuiko Digital ED 8mm F1.8 PRO
⌀62 × 80 mm
315 g (0.69 lb / 11.11 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 8mm F1.8 PRO is 28mm shorter and 25mm narrower than FE 50mm F1.2 GM.
M.Zuiko Digital ED 8mm F1.8 PRO is 463 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 8mm F1.8 PRO
- ✓
Special elements
Adds 1 DSA, 1 Aspherical, 3 ED…
- ✓
Min focus distance
12 cm vs 40 cm — lower is better
- ✓
Weight
315 g vs 778 g — lower is better
- ✓
Diameter
62 mm vs 87 mm — lower is better
- ✓
Length
80 mm vs 108 mm — lower is better
- ✓
Max magnification
0.22 × vs 0.17 × — higher is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Custom function button
Only FE 50mm F1.2 GM supports it
- ✓
Max aperture (Wide)
f/1.2 vs f/1.8 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.8 — 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 8mm F1.8 PRO
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
- ✓Lightweight design easy to carry all day
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 8mm F1.8 PRO and FE 50mm F1.2 GM at major authorized retailers.
OM System M.Zuiko Digital ED 8mm F1.8 PRO
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.