ShutterCount cannot read a shutter count from Sony RX100 IV files. Sony’s compact (DSC) platform does not expose the counter in metadata that any public tool can decode — the tool still shows the file’s EXIF details (model, serial number, date, exposure settings), just no actuation count.
Check Shutter Count →The Sony RX100 IV (DSC-RX100M4, 2015) was the first RX100 model with a stacked Exmor RS CMOS sensor — a technology enabling dramatically faster readout speeds than conventional BSI sensors. The result: 4K (UHD) video at 30fps, a silent electronic shutter option, and the headline feature that made the IV famous: super slow-motion video at up to 40× (capturing at ~960fps), a capability previously found only in cameras costing many times more.
The lens (ZEISS Vario-Sonnar T* 24–70 mm f/1.8–2.8) and built-in pop-up OLED EVF were carried over unchanged from the RX100 III. The IV sits between the III (no 4K, no silent shutter) and the V (which added phase-detection AF), making it the minimum RX100 version for users who need 4K video.
| Spec | Value | Note |
|---|---|---|
| Model name | DSC-RX100M4 | Mark IV |
| Released | 2015 | June 2015 |
| Sensor | 20.1 MP 1-inch stacked Exmor RS CMOS | First in RX100 series |
| Lens | 24–70 mm f/1.8–2.8 | ZEISS Vario-Sonnar T* (same as III) |
| EVF | Built-in pop-up OLED | 0.39-inch, 1.44M dots |
| 4K video | UHD 3840 × 2160 @ 30fps | First in RX100 series |
| Super slow-mo | Up to 40× (960fps capture) | First in RX100 series |
| Silent shutter | Yes (electronic) | Does not increment mechanical counter |
| RAW format | ARW | Shutter count in MakerNote 0x9050 |
| Est. shutter life | ~200,000 actuations | Not officially published |
ShutterCount cannot read a shutter count from Sony RX100 IV files. Sony’s compact (DSC) platform does not expose the counter in metadata that any public tool — ExifTool included — can decode. If you drop a file from this camera into the tool, you will still see the EXIF details (model, serial number, date, exposure settings) — but no actuation count.
When buying a used Sony RX100 IV, judge it by overall condition instead: lens and zoom action, sensor dust or marks, battery health, body wear, and the seller’s shooting history.
| Mechanical Count | % of Est. Life | Assessment |
|---|---|---|
| 0 – 8,000 | < 4 % | Very low use — near new |
| 8,000 – 50,000 | 4 – 25 % | Light to moderate use |
| 50,000 – 120,000 | 25 – 60 % | Moderate use — inspect carefully |
| 120,000 – 170,000 | 60 – 85 % | Heavy use — negotiate price |
| 170,000 + | 85 %+ | Near or past estimated life |
The RX100 IV was released in 2015 — used bodies are now 10+ years old. Check the pop-up EVF hinge (deploy and retract smoothly), the lens barrel for fungus or haze, the NP-BX1 battery charge capacity, and the memory card door latch. For video-heavy sellers, also inquire about 4K recording hours — heat management is generally good on the IV but worth knowing.
The encrypted MakerNote block that holds the shutter count on Sony’s interchangeable-lens bodies (tag 0x9050) is not decodable for this model — no published offset exists for it, in this tool or in ExifTool. Rather than show a number that might be wrong, ShutterCount shows none.
For a 2015 compact, excellent. The 4K footage from the stacked sensor has very low rolling shutter distortion compared to conventional sensors. However, 4K recording is limited to approximately 5 minutes per clip due to thermal constraints. For longer 4K takes, consider the later RX100 V, VI, or VII which have slightly improved thermal management, though all RX100 models have the same 5-minute 4K limit.
The RX100 V (2016) added Fast Hybrid AF with 315 phase-detection points covering 65% of the sensor, dramatically improving continuous AF tracking for moving subjects. The IV uses contrast-detect AF only. If sports or wildlife photography is a priority, the V is a meaningful upgrade. For static subjects or video, the IV's capabilities are nearly identical.
Super slow-motion on the RX100 IV uses a purely electronic readout at very high frame rates — it does not use the mechanical shutter at all. Super slow-motion clips add zero to the mechanical shutter count. A body with thousands of slow-motion clips may have a deceptively low mechanical count.
Yes, with clear expectations. The stacked sensor and 4K video remain capable for many uses. The f/1.8–2.8 lens is excellent. However, 10-year-old bodies may have degraded NP-BX1 batteries, and the 5-minute 4K limit requires planning. At current used prices, the IV delivers strong value for hybrid photo/video use where the silent shutter and 4K features are genuinely useful.