Sigma · Fujifilm X mount · Updated 31 Aug 2026
100-400mm F5-6.3 DG DN OS Contemporary
A sharp central telezoom with excellent value and lighter mass than pro wildlife glass; full-frame origins and aperture limit portability gains.
Manufacturer data only; no firm optical rank is claimed.
01 / EDITORIAL TAKE
What the evidence supports
A sharp central telezoom with excellent value and lighter mass than pro wildlife glass; full-frame origins and aperture limit portability gains.
- Best for
- Wildlife, Sports.
- Main tradeoff
- Its 1135g weight, F5–6.3 maximum aperture, and manufacturer only evidence profile should be considered against the alternatives below.
02 / VERIFIED SPECIFICATIONS
The decision-grade facts
- 35mm equivalent
- 152–609mm
- Maximum aperture
- F5–6.3
- Focus
- AF
- Weight
- 1135g
- Dimensions
- Ø86 × 199.5mm
- Weather resistance
- Yes
- Optical stabilization
- Yes
- US list price
- $1,049
MSRP is a static US list-price reference, not a live offer. Verified 2026-08-30. Price source ↗
03 / EVIDENCE
What the rank rests on
Specifications and maker claims only; this lens is held in Data pending.
04 / ALTERNATIVES
Compare before deciding
A proven wildlife zoom with strong sharpness across the range, effective OIS, teleconverter support, and professional bulk.
Resolution 89.9 ±8FujifilmXF 70-300mm F4-5.6 R LM OIS WRCompact, fast, and officially qualified; independent testing finds the 300mm edges less convincing on the densest sensor.
Resolution 88.0 ±3ViltroxAF 85mm F1.8 IICrisp central portrait detail and attractive value, but a full-frame-derived design makes it larger than APS-C-native rivals.
Resolution 82.0 ±5