77mm Variable ND2-400 Filtervs A1
K&F Concept
77mm Variable ND2-400 Filter
Starting from £45 new
Best for Video exposure control & daytime long exposures
View 77mm Variable ND2-400 Filter
Sony
A1 (2021)
Starting from £5999 new
Best for Professional sport, wildlife, portrait & hybrid shooting
View A1
GearScore™ Verdict — Which should you buy?
Video Exposure Control & Daytime Long Exposures — 77mm Variable ND2-400 Filter: One filter instead of three. At 77mm it works on most standard zoom lenses. There's some colour cast and cross-pattern at extreme settings — step up to the Hoya or Breakthrough options if you need perfection, but for most uses this delivers excellent results at a fair price.
Professional Sport, Wildlife, Portrait & Hybrid Shooting — A1 (2021): 50MP, 30fps, 8K — the Sony A1 is the most complete professional camera ever made.
Who should buy what
77mm Variable ND2-400 Filter
- Videographers who need to control shutter speed in bright daylight
- Photographers who want to shoot long exposures without swapping fixed ND filters
- Portrait photographers who want shallow depth of field in bright outdoor light
- Anyone who wants one filter to cover all ND situations
A1 (2021)
- Professional photographers who need resolution and speed without compromise
- Sports and wildlife photographers demanding the absolute fastest Sony
- Studio and fashion photographers who also shoot sport or events
- A9 III or A7R V owners who want a single body that does everything
Quick take: The 77mm variable nd2-400 filter is the most affordable; only the a1 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | 77mm Variable ND2-400 Filter | A1 (2021) |
|---|---|---|
| Price | £45 | £5,999 |
| Sensor | — | 50.1MP Full-Frame Stacked BSI CMOS Exmor RS |
| Resolution | — | 50.1MP |
| Video | — | 8K/30p, 4K/120p, 1080p/240p |
| Autofocus | — | Real-time Tracking, AI subject recognition — 759 phase-detect points |
| Stabilisation | — | IBIS — up to 5.5 stops |
| Burst Rate | — | 30fps electronic with full AF/AE |
| Battery Life | — | ~430 shots (CIPA) |
| Weight | 65g | 737g (with battery) |
| Dimensions | 77mm thread × 8mm depth | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | No | Yes |
| Viewfinder | — | EVF, 9.44M dots, 0.90× magnification, 240fps |
| Screen | — | 3.0" fully tilting touchscreen |
| Mount | 77mm filter thread | Sony FE mount (full-frame E-mount) |
| Memory Cards | — | Dual CFexpress Type A / SD UHS-II |
| Connectivity | — | USB-C, Wi-Fi 5GHz, Bluetooth, Ethernet, HDMI |
Suitability by genre
| Genre | 77mm Variable ND2-400 Filter | A1 |
|---|---|---|
| Video | — | |
| Street | — | |
| Portrait | ||
| Wildlife | ||
| Sports | — | |
| Vlogging & Video | — | |
| Landscape | — | |
| Wedding | — |
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