OM System
M.Zuiko Digital ED 300mm F4 IS PRO
Micro Four Thirds Mount
600mm-equiv. F4 super-telephoto with Sync IS (6 stops), 1475g weight, removable rotating tripod collar, and PRO weather sealing.
$3,499
Launch priceReleased Feb 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 5.1 years newer.
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Wins
M.Zuiko Digital ED 300mm F4 IS PRO
Wins
FE 50mm F1.2 GM
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 300mm F4 IS PRO has higher OIS effectiveness (4 stops vs 0 stops)
- BFE 50mm F1.2 GM has lower Min focus distance (40 cm vs 140 cm)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/4)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/4)
- BFE 50mm F1.2 GM has lower Length (108 mm vs 227 mm)
Key specs at a glance
Size and weight, to scale
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M.Zuiko Digital ED 300mm F4 IS PRO
⌀93 × 227 mm
1475 g (3.25 lb / 52.03 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 300mm F4 IS PRO is 119mm longer and 6mm wider than FE 50mm F1.2 GM.
M.Zuiko Digital ED 300mm F4 IS PRO is 697 g heavier 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 300mm F4 IS PRO
- ✓
Special elements
Adds 3 Super ED, 3 HR, 1 E-HR
- ✓
OIS effectiveness
4 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only M.Zuiko Digital ED 300mm F4 IS PRO supports it
- ✓
Max magnification
0.24 × vs 0.17 × — higher is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Min focus distance
40 cm vs 140 cm — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/4 — lower is better
- ✓
Length
108 mm vs 227 mm — lower is better
- ✓
Weight
778 g vs 1475 g — lower is better
- ✓
Diameter
87 mm vs 92.5 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Custom function button
Both support custom function button
Pros & cons at a glance
Editorially curated highlights and trade-offs.
M.Zuiko Digital ED 300mm F4 IS PRO
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Premium price point
- –Relatively heavy for extended handheld use
- –Slower maximum aperture limits low-light performance
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 300mm F4 IS PRO and FE 50mm F1.2 GM at major authorized retailers.
OM System M.Zuiko Digital ED 300mm F4 IS 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.