Sony
FE 300mm F2.8 GM OSS
Sony E Mount
World's lightest 300mm F2.8 — 1470g with XD Linear AF, OSS, and G Master resolution.
$6,999
Launch priceReleased Jan 2024
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
FE 300mm F4.5-5.6 G OSS is 7 months newer.
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Wins
FE 300mm F2.8 GM OSS
Wins
FE 300mm F4.5-5.6 G OSS
TL;DR — Key differences
- BFE 300mm F4.5-5.6 G OSS has higher Max magnification (0.31 × vs 0.16 ×)
- AFE 300mm F2.8 GM OSS has lower Max aperture (Wide) (f/2.8 vs f/4.5)
- AFE 300mm F2.8 GM OSS has lower Max aperture (Tele) (f/2.8 vs f/4.5)
- BFE 300mm F4.5-5.6 G OSS has lower Diameter (89 mm vs 124 mm)
- BFE 300mm F4.5-5.6 G OSS has lower Min focus distance (150 cm vs 200 cm)
Key specs at a glance
Size and weight, to scale
FE 300mm F2.8 GM OSS
⌀124 × 265 mm
1470 g (3.24 lb / 51.85 oz)
Credit card
85.6 × 54 mm
for scale
FE 300mm F4.5-5.6 G OSS
⌀89 × 210 mm
1640 g (3.62 lb / 57.85 oz)
FE 300mm F2.8 GM OSS is 56mm longer and 35mm wider than FE 300mm F4.5-5.6 G OSS.
FE 300mm F2.8 GM OSS is 170 g lighter than FE 300mm F4.5-5.6 G OSS.
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 F2.8 GM OSS
- ✓
Special elements
Adds 3 Super ED, 1 ED
- ✓
Max aperture (Wide)
f/2.8 vs f/4.5 — lower is better
- ✓
Max aperture (Tele)
f/2.8 vs f/4.5 — lower is better
- ✓
Weight
1470 g vs 1640 g — lower is better
Reasons to choose the FE 300mm F4.5-5.6 G OSS
- ✓
Special elements
Adds 2 ED, 1 Super ED
- ✓
Diameter
89 mm vs 124 mm — lower is better
- ✓
Min focus distance
150 cm vs 200 cm — lower is better
- ✓
Length
209.5 mm vs 265 mm — lower is better
- ✓
Max magnification
0.31 × vs 0.16 × — higher is better
- ✓
OIS effectiveness
5.5 stops vs 5 stops — higher is better
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
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 F2.8 GM OSS
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
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
Decided which one is right for you?
Compare live prices for the FE 300mm F2.8 GM OSS and FE 300mm F4.5-5.6 G OSS at major authorized retailers.
Sony FE 300mm F2.8 GM OSS
Sony FE 300mm F4.5-5.6 G OSS
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.