A6700vs FE 100-400mm f/4.5-5.6 GM OSS
VS
Sony
FE 100-400mm f/4.5-5.6 GM OSS (2017)
Starting from £2499 new
Best for Wildlife, sports & birds in flight
View FE 100-400mm f/4.5-5.6 GM OSS
GearScore™ Verdict — Which should you buy?
All-Round & Video — A6700 (2023): Best-in-class autofocus and 4K/120p video in a compact APS-C body — the standout camera under £1,000.
Wildlife, Sports & Birds In Flight — FE 100-400mm f/4.5-5.6 GM OSS (2017): The benchmark wildlife and sports telephoto for Sony mirrorless — G Master quality with Dual XD tracking that locks onto subjects and holds them.
Who should buy what
A6700 (2023)
- APS-C photographers who want the best Sony autofocus in a compact body
- Video shooters who need 4K/120p and subject tracking in a smaller package
- A6400 or A6600 owners ready for a significant AF and video upgrade
- Photographers who want near-A7 performance without the full-frame price
Quick take: The a6700 is the most affordable; only the fe 100-400mm f/4.5-5.6 gm oss is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | A6700 (2023) | FE 100-400mm f/4.5-5.6 GM OSS (2017) |
|---|---|---|
| Price | £999 | £2,499 |
| Sensor | 26MP APS-C Exmor R BSI CMOS | f/4.5-5.6 (variable max aperture) |
| Resolution | 26.0MP | — |
| Video | 4K/120p, 4K/60p oversampled, S-Log3, 10-bit | 112cm minimum focus distance |
| Autofocus | 759-point phase-detect, AI subject recognition (human/animal/bird/vehicle) | Dual XD linear motors — ultra-fast tracking for moving subjects |
| Stabilisation | 5-axis IBIS, 5.0 stops | 4.5-stop OSS (up to 5.5 stops combined with body IBIS) |
| Burst Rate | 11fps mechanical, 30fps electronic | N/A |
| Battery Life | ~570 shots (CIPA) | N/A |
| Weight | 493g body only | 1395g |
| Dimensions | 122.0 × 69.0 × 75.1mm | 93.9mm diameter × 218mm length |
| Weather Sealed | No | Yes |
| Viewfinder | EVF, 2.36M dots | N/A |
| Screen | 3.0" vari-angle touchscreen | N/A |
| Mount | Sony E-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II / CFexpress Type A slot | N/A |
| Connectivity | USB-C (3.2), Bluetooth, Wi-Fi | N/A |
Suitability by genre
| Genre | A6700 | FE 100-400mm f/4.5-5.6 GM OSS |
|---|---|---|
| Portrait | — | |
| Street | — | |
| Landscape | ||
| Vlogging & Video | — | |
| Sports & Action | ||
| Wildlife |
More comparisons with A6700
Camera family history