How the Sony A7 III and Nikon Z6 II compare on rated shutter life, sensor and value — and how to read the exact actuation count of either from a RAW file, free and in your browser.
Check Your Shutter Count →| Spec | A7 III | Z6 II |
|---|---|---|
| Full name | Sony A7 III | Nikon Z6 II |
| Released | 2018 | 2020 |
| Sensor | 24.2 MP full-frame | 24.5 MP full-frame |
| Category | full-frame mirrorless | full-frame mirrorless |
| RAW format | ARW | NEF |
| Shutter type | Mechanical + electronic | Mechanical + electronic |
| Rated shutter life | 200,000 | 200,000 |
Both bodies carry the same 200,000-actuation rating, so shutter durability is a wash — your buying decision comes down to sensor, features and price, not shutter wear.
Rated figures are manufacturer estimates, not hard limits. Many bodies shoot well past their rating, while a small number fail earlier — the rating is best read as a durability class, not a countdown. When buying used, what matters is the actual actuation count relative to that rating, which you can read for free below.
The Z6 II is the newer design (2020 vs 2018), which usually means longer firmware support, a more current autofocus system and a stronger residual value — but also a higher used price.
Remember you are also choosing a system: Sony (ARW files) and Nikon (NEF files) have different lens line-ups, so weigh the glass you already own or plan to buy.
The A7 III writes ARW files and the Z6 II writes NEF files — ShutterCount handles both formats natively.
See the full model guides for each body: Sony A7 III shutter count and Nikon Z6 II shutter count.
Both the Sony A7 III and the Nikon Z6 II are rated for 200,000 shutter actuations, so neither has a durability edge on paper.
Take a photo, then drop the resulting ARW (A7 III) or NEF (Z6 II) RAW file into shuttercount.app. The count is read from the file’s MakerNote entirely in your browser — no upload, no account.
The Z6 II is newer (2020), which tends to mean better resale value and longer support; the A7 III is often the better bargain used. Always verify the actual shutter count from an original RAW file before buying.
No. Only the manufacturer’s service centre can reset the hardware counter, and only after a physical shutter replacement. EXIF editors can rewrite surrounding metadata but cannot alter the in-camera counter, which is why you should always read it from an untouched ARW/NEF RAW file.
Compare shutter life and value across other popular bodies: