Sony
FE 300mm F4.5-5.6 G OSS
Sony E Mount
Compact 300mm full-frame telephoto at 1640g with 5.5-stop OSS and linear AF.
$1,399
Launch priceReleased Sep 2024
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 300mm F4.5-5.6 G OSS is 3.5 years newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
FE 300mm F4.5-5.6 G OSS
Wins
FE 50mm F1.2 GM
TL;DR — Key differences
- AFE 300mm F4.5-5.6 G OSS has higher OIS effectiveness (5.5 stops vs 0 stops)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/4.5)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/4.5)
- BFE 50mm F1.2 GM has lower Min focus distance (40 cm vs 150 cm)
- BFE 50mm F1.2 GM has lower Weight (778 g vs 1640 g)
Key specs at a glance
Size and weight, to scale
FE 300mm F4.5-5.6 G OSS
⌀89 × 210 mm
1640 g (3.62 lb / 57.85 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)
FE 300mm F4.5-5.6 G OSS is 102mm longer and 2mm wider than FE 50mm F1.2 GM.
FE 300mm F4.5-5.6 G OSS is 862 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 FE 300mm F4.5-5.6 G OSS
- ✓
Special elements
Adds 2 ED, 1 Super ED
- ✓
OIS effectiveness
5.5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only FE 300mm F4.5-5.6 G OSS supports it
- ✓
Max magnification
0.31 × vs 0.17 × — higher is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Max aperture (Wide)
f/1.2 vs f/4.5 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/4.5 — lower is better
- ✓
Min focus distance
40 cm vs 150 cm — lower is better
- ✓
Weight
778 g vs 1640 g — lower is better
- ✓
Length
108 mm vs 209.5 mm — lower is better
- ✓
Diameter
87 mm vs 89 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.
FE 300mm F4.5-5.6 G OSS
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –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 FE 300mm F4.5-5.6 G OSS and FE 50mm F1.2 GM at major authorized retailers.
Sony FE 300mm F4.5-5.6 G OSS
Sony FE 50mm F1.2 GM
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.