Sony
FE 400mm F2.8 GM OSS
Sony E Mount
World's lightest 400mm F2.8 — 2895g with 3 fluorite elements, XD Linear AF, and OSS.
$12,000
Launch priceReleased Jun 2018
Sony
FE 600mm F4 GM OSS
Sony E Mount
3040g 600mm F4 G Master with XD Linear AF, OSS, and fluorite/ED optics.
$12,999
Launch priceReleased Apr 2021
FE 600mm F4 GM OSS is 2.8 years newer.
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Wins
FE 400mm F2.8 GM OSS
Wins
FE 600mm F4 GM OSS
1 categories tied
Which would you choose?
TL;DR — Key differences
- AFE 400mm F2.8 GM OSS has lower Min focus distance (270 cm vs 450 cm)
- AFE 400mm F2.8 GM OSS has lower Max aperture (Wide) (f/2.8 vs f/4)
- AFE 400mm F2.8 GM OSS has lower Max aperture (Tele) (f/2.8 vs f/4)
- AFE 400mm F2.8 GM OSS has higher Max magnification (0.16 × vs 0.14 ×)
- AFE 400mm F2.8 GM OSS has lower Weight (2895 g vs 3040 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareFE 400mm F2.8 GM OSS
⌀158 × 359 mm
2895 g (6.38 lb / 102.12 oz)
Credit card
85.6 × 54 mm
for scale
FE 600mm F4 GM OSS
⌀160 × 368 mm
3040 g (6.70 lb / 107.23 oz)
FE 400mm F2.8 GM OSS is 9mm shorter and 2mm narrower than FE 600mm F4 GM OSS.
FE 400mm F2.8 GM OSS is 145 g lighter than FE 600mm F4 GM 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 400mm F2.8 GM OSS
- ✓
Special elements
Adds 3 Fluorite, 1 ED
- ✓
Min focus distance
270 cm vs 450 cm — lower is better
- ✓
Max aperture (Wide)
f/2.8 vs f/4 — lower is better
- ✓
Max aperture (Tele)
f/2.8 vs f/4 — lower is better
- ✓
Weight
2895 g vs 3040 g — lower is better
- ✓
Length
359 mm vs 368 mm — lower is better
- ✓
Max magnification
0.16 × vs 0.14 × — higher is better
- ✓
Diameter
158.1 mm vs 160 mm — lower is better
Reasons to choose the FE 600mm F4 GM OSS
- ✓
Special elements
Adds 2 Fluorite, 2 ED
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
OIS effectiveness
Both 5 stops
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 400mm 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 600mm F4 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
- –Slower maximum aperture limits low-light performance
Decided which one is right for you?
Compare live prices for the FE 400mm F2.8 GM OSS and FE 600mm F4 GM OSS at major authorized retailers.
Sony FE 400mm F2.8 GM OSS
Sony FE 600mm F4 GM OSS
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.