Sigma
100-400mm F5-6.3 DG DN OS Contemporary
Sony E Mount
100-400mm F5-6.3 DG DN OS Contemporary — 100–400mm f/5-6.3 for Sony E, a popular choice in the sigma lineup.
$949
Launch priceReleased Jul 2020
Sony
FE 70-200mm F2.8 GM OSS II
Sony E Mount
The standard telephoto zoom, completely redesigned to be 29% lighter and significantly sharper.
$2,799
Launch priceReleased Oct 2021
FE 70-200mm F2.8 GM OSS II is 1.3 years newer.
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Wins
100-400mm F5-6.3 DG DN OS Contemporary
Wins
FE 70-200mm F2.8 GM OSS II
TL;DR — Key differences
- BFE 70-200mm F2.8 GM OSS II has lower Max aperture (Tele) (f/2.8 vs f/6.3)
- BFE 70-200mm F2.8 GM OSS II has lower Max aperture (Wide) (f/2.8 vs f/5)
- BFE 70-200mm F2.8 GM OSS II has higher Max magnification (0.3 × vs 0.25 ×)
- A100-400mm F5-6.3 DG DN OS Contemporary has higher OIS effectiveness (5 stops vs 4.5 stops)
- BFE 70-200mm F2.8 GM OSS II has lower Weight (1045 g vs 1140 g)
Key specs at a glance
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 100-400mm F5-6.3 DG DN OS Contemporary
- ✓
Special elements
Adds Aspherical
- ✓
Control ring
Only 100-400mm F5-6.3 DG DN OS Contemporary supports it
- ✓
OIS effectiveness
5 stops vs 4.5 stops — higher is better
- ✓
Diameter
81 mm vs 88 mm — lower is better
- ✓
Min focus distance
38 cm vs 40 cm — lower is better
Reasons to choose the FE 70-200mm F2.8 GM OSS II
- ✓
Special elements
Adds 1 XA, 1 Aspherical, 1 Super ED…
- ✓
Max aperture (Tele)
f/2.8 vs f/6.3 — lower is better
- ✓
Custom function button
Only FE 70-200mm F2.8 GM OSS II supports it
- ✓
Max aperture (Wide)
f/2.8 vs f/5 — lower is better
- ✓
Weight
1045 g vs 1140 g — lower is better
- ✓
Max magnification
0.3 × vs 0.25 × — higher is better
- ✓
Length
200 mm vs 210 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
100-400mm F5-6.3 DG DN OS Contemporary
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓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 70-200mm F2.8 GM OSS II
Pros
- ✓Extremely lightweight for an f/2.8 telephoto zoom (only 1045g)
- ✓Virtually instantaneous and silent autofocus with 4 XD Linear motors
- ✓Stunning optical performance and contrast across entire range
- ✓Outstanding built-in Optical SteadyShot stabilization
- ✓Dedicated physical aperture ring with click and lock switches
Cons
- –Very high price tag
- –Lens hood is bulky and can block storage space easily
Decided which one is right for you?
Compare live prices for the 100-400mm F5-6.3 DG DN OS Contemporary and FE 70-200mm F2.8 GM OSS II at major authorized retailers.
Sigma 100-400mm F5-6.3 DG DN OS Contemporary
Sony FE 70-200mm F2.8 GM OSS II
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.