Sony RX100 III vs Sony RX100 IV
Side-by-side used price and spec comparison. Lowest current prices pulled daily from the major used-gear sites.
Used prices have been rising recently. Prices are up 66.9% over the last 30 days. The 90-day low was $239, $260 below today. Currently 62% of the $799 MSRP.
Used prices have been rising recently. Prices are up 86.1% over the last 30 days. The 90-day low was $294, $253 below today. Currently 55% of the $999 MSRP.
Quick answers
- Which is cheaper used, the Sony RX100 III or the Sony RX100 IV?
- The Sony RX100 III is cheaper used: $499 against $547 for the Sony RX100 IV, a gap of $48 (10%) as of 2026-10-28.
- How much more does the newer Sony RX100 IV cost used?
- $48 more. The Sony RX100 IV (2015) starts at $547 used and the Sony RX100 III (2014) at $499 as of 2026-10-28.
- What share of its launch price does a used Sony RX100 III cost?
- About 62%: $499 used against a $799 launch price as of 2026-10-28.
Specs side by side
| Sony RX100 III | Sony RX100 IV | |
|---|---|---|
| Brand | Sony | Sony |
| Family | Sony RX | Sony RX |
| Category | body | body |
| Body type | Compact | Compact |
| Mount | Fixed Lens | Fixed Lens |
| Sensor | 1-inch | 1-inch |
| Sensor family | Sony 1-inch 20MP (RX100 I-III) · 20.1MP 1-inch Exmor R BSI CMOS | Sony 1-inch 20MP stacked (RX100 IV/V/VA) · 20.1MP 1-inch Exmor RS stacked CMOS |
| Megapixels | 20.1 MP | 20.1 MP |
| Autofocus | Contrast Detection | Contrast Detection |
| IBIS | no | no |
| Weather sealed | No | No |
| Max video | 1080p60 | 4K30 |
| Max native ISO | ISO 12,800 | ISO 12,800 |
| Body weight | 290 g | 298 g |
| Dimensions | 102 × 58 × 41 mm | 102 × 58 × 41 mm |
| Body material | aluminum | aluminum |
| Released | 2014-05-16 | 2015-06-10 |
| Discontinued | — | — |
| Status | likely discontinued | likely discontinued |
| MSRP | $799 | $999 |
| Current low | $499 | $547 |
| vs MSRP | -38% | -45% |
Dynamic range, head to head
Both sensors plotted on one chart, across the full ISO range. The higher line holds more shadow-to-highlight latitude at that ISO.
Overlay both curves on Photons to PhotosMeasurements by William J. Claff. We link rather than reprint them.
The verdicts above describe price timing. They don't tell you which camera fits your shooting style. See /methods for how we normalize seller conditions and compute the deal score.