OM System
M.Zuiko Digital ED 20mm F1.4 PRO
Micro Four Thirds Mount
40mm-equiv. F1.4 wide prime with 25 cm close focus, 58 mm filter thread, and IPX1 weather sealing.
$799
Launch priceReleased Oct 2020
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 Mar 2025
FE 50mm F1.4 GM is 4.4 years newer.
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Wins
M.Zuiko Digital ED 20mm F1.4 PRO
Wins
FE 50mm F1.4 GM
3 categories tied
Which would you choose?
TL;DR — Key differences
- AM.Zuiko Digital ED 20mm F1.4 PRO has lower Weight (247 g vs 580 g)
- AM.Zuiko Digital ED 20mm F1.4 PRO has lower Length (61.7 mm vs 131 mm)
- BFE 50mm F1.4 GM has higher Max magnification (0.15 × vs 0.11 ×)
- AM.Zuiko Digital ED 20mm F1.4 PRO has lower Diameter (63.4 mm vs 81 mm)
- AM.Zuiko Digital ED 20mm F1.4 PRO has lower Min focus distance (25 cm vs 30 cm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to share
M.Zuiko Digital ED 20mm F1.4 PRO
⌀63 × 62 mm
247 g (0.54 lb / 8.71 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.4 GM
⌀81 × 131 mm
580 g (1.28 lb / 20.46 oz)
M.Zuiko Digital ED 20mm F1.4 PRO is 69mm shorter and 18mm narrower than FE 50mm F1.4 GM.
M.Zuiko Digital ED 20mm F1.4 PRO is 333 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 20mm F1.4 PRO
- ✓
Special elements
Adds 1 Aspherical, 1 Super ED, 2 ED
- ✓
Weight
247 g vs 580 g — lower is better
- ✓
Length
61.7 mm vs 131 mm — lower is better
- ✓
Diameter
63.4 mm vs 81 mm — lower is better
- ✓
Min focus distance
25 cm vs 30 cm — lower is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, ED
- ✓
Max magnification
0.15 × vs 0.11 × — higher is better
Shared specifications
Max aperture (Wide)
Both f/1.4
Max aperture (Tele)
Both f/1.4
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 20mm F1.4 PRO
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
- ✓Lightweight design easy to carry all day
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 20mm F1.4 PRO and FE 50mm F1.4 GM at major authorized retailers.
OM System M.Zuiko Digital ED 20mm F1.4 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 June 2026.