A7Cvs FE 100-400mm f/4.5-5.6 GM OSS
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?
Compact Travel & Content Creation — A7C (2020): The A7C proves full-frame doesn't have to be bulky. Excellent battery life, reliable Eye AF and a vari-angle screen in a pocketable body is a compelling combination for travel and content creators. The A7C II improved on it, but the original remains a strong value buy.
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
A7C (2020)
- Travel photographers who want full-frame in the smallest possible body
- Content creators who need a flip screen and reliable Eye AF
- Photographers upgrading from APS-C who want to keep a compact kit
- Vloggers who need 4K and great battery life on the road
Quick take: The a7c 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 | A7C (2020) | FE 100-400mm f/4.5-5.6 GM OSS (2017) |
|---|---|---|
| Price | £1,299 | £2,499 |
| Sensor | 24.2MP Full-Frame Exmor R BSI CMOS | f/4.5-5.6 (variable max aperture) |
| Resolution | 24.2MP | — |
| Video | 4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3 | 112cm minimum focus distance |
| Autofocus | Phase-detect, 693 points, real-time Eye AF & animal AF | Dual XD linear motors — ultra-fast tracking for moving subjects |
| Stabilisation | 5-axis IBIS, 5 stops | 4.5-stop OSS (up to 5.5 stops combined with body IBIS) |
| Burst Rate | 10fps with AF/AE tracking | N/A |
| Battery Life | ~740 shots (CIPA) — outstanding for a Sony mirrorless | N/A |
| Weight | 509g (body, battery, card) | 1395g |
| Dimensions | 124.0 × 71.1 × 59.7mm | 93.9mm diameter × 218mm length |
| Weather Sealed | No | Yes |
| Viewfinder | None built-in — use rear screen or accessory EVF | N/A |
| Screen | 3.0" vari-angle touchscreen, 921k dots | N/A |
| Mount | Sony E-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II | N/A |
| Connectivity | USB-C (USB 3.2 Gen 2), Wi-Fi, Bluetooth, NFC | N/A |
Suitability by genre
| Genre | A7C | FE 100-400mm f/4.5-5.6 GM OSS |
|---|---|---|
| Travel | — | |
| Video | — | |
| Portrait | — | |
| Street | — | |
| Wildlife | ||
| Sports & Action | — | |
| Landscape | — |
More comparisons with A7C
Camera family history