Drop an ARW RAW file from your Sony A1 (ILCE-1) and get the exact mechanical shutter actuation count in seconds — processed entirely in your browser, never uploaded anywhere.
Check Shutter Count →The Sony A1 is Sony's 2021 top-of-range hybrid full-frame mirrorless camera, combining a 50.1 MP stacked BSI CMOS sensor with 30 fps burst shooting, 8K video recording, and a shutter rated at 500,000 actuations. It sits above both the A7R V (resolution-focused) and A9 III (speed-focused) as Sony's everything-camera for elite professional work.
| Model | Release | Sensor | Rated Shutter Life | RAW Format |
|---|---|---|---|---|
| Sony A1 (ILCE-1) | 2021 | 50.1 MP full-frame stacked BSI | 500,000 | ARW |
| Sony A9 III (speed) | 2023 | 24.6 MP full-frame global shutter | 500,000 | ARW |
| Sony A7R V (resolution) | 2022 | 61 MP full-frame BSI | 500,000 | ARW |
| Sony A7 IV (entry FF) | 2021 | 33 MP full-frame BSI | 150,000 | ARW |
To get the most up-to-date reading, shoot one dedicated mechanical frame immediately before checking.
| Actuation Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 50,000 | 0 – 10 % | Very low mechanical use |
| 50,000 – 150,000 | 10 – 30 % | Low use — plenty of life remaining |
| 150,000 – 300,000 | 30 – 60 % | Moderate use — normal for professional work |
| 300,000 – 450,000 | 60 – 90 % | High use — negotiate price accordingly |
| 450,000 + | 90 %+ | Near or past rated life — budget for shutter service |
The Sony A1 stores the mechanical shutter count encrypted in ARW MakerNote tag 0x9050. ShutterCount applies Sony's cubic residue decryption (modulo 249) and reads the 32-bit count from byte offset 0x003a within the decrypted block — confirmed for the A1 alongside the A7 IV, A7 III, A7R V, and A9 III.
All decryption happens locally in your browser. The ARW file is never transmitted anywhere.
The A1's stacked sensor supports 30 fps fully electronic shooting with minimal rolling shutter distortion. These electronic frames do not increment the mechanical counter. The A1 was specifically designed for photographers who shoot extremely high volumes electronically — so its mechanical count is often a particularly poor indicator of total usage compared to other Sony bodies.
Shoot a mechanical ARW frame, then drop it into shuttercount.app. The count is decrypted from tag 0x9050 in your browser — no upload needed.
Sony rates the A1 at 500,000 actuations — matching the A7R V, A9 III, and A9 II at the top of Sony's professional range.
Possibly — or it may reflect a body used almost exclusively in electronic mode. Unlike the A7R V (where landscape photographers rarely use electronic shutter), an A1 owner who primarily shoots sport/wildlife may have taken tens of thousands of electronic frames with minimal mechanical use. Inspect the camera carefully for wear.
Only a Sony authorised service centre can reset the hardware counter after a physical shutter replacement. Always verify from an original ARW file, not a screenshot.