Olympus OM-D E-M10 Mark III vs Olympus OM-D E-M10 Mark 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 178.2% over the last 30 days. The 90-day low was $124, $221 below today. Currently 53% of the $649 MSRP.
Today's price sits well above the recent low. Today's price runs 43% above the 90-day low of $284 (seen Jul 30, 2026). 58% of the $699 MSRP. Prices are down 2.4% over the last 30 days.
Quick answers
- Which is cheaper used, the Olympus OM-D E-M10 Mark III or the Olympus OM-D E-M10 Mark IV?
- The Olympus OM-D E-M10 Mark III is cheaper used: $345 against $405 for the Olympus OM-D E-M10 Mark IV, a gap of $60 (17%) as of 2026-10-28.
- How much more does the newer Olympus OM-D E-M10 Mark IV cost used?
- $60 more. The Olympus OM-D E-M10 Mark IV (2020) starts at $405 used and the Olympus OM-D E-M10 Mark III (2017) at $345 as of 2026-10-28.
- What share of its launch price does a used Olympus OM-D E-M10 Mark III cost?
- About 53%: $345 used against a $649 launch price as of 2026-10-28.
Specs side by side
| Olympus OM-D E-M10 Mark III | Olympus OM-D E-M10 Mark IV | |
|---|---|---|
| Brand | Olympus | Olympus |
| Family | Olympus OM-D | Olympus OM-D |
| Category | body | body |
| Body type | Mirrorless | Mirrorless |
| Mount | MFT | MFT |
| Sensor | MFT | MFT |
| Sensor family | Olympus 16MP Four Thirds Live MOS · 16MP Four Thirds Live MOS | Olympus 20MP Four Thirds Live MOS · 20MP Four Thirds Live MOS |
| Megapixels | 16.1 MP | 20 MP |
| Autofocus | Contrast Detection | Contrast Detection |
| IBIS | 5-axis 4-stop | 5-axis 4.5-stop |
| Weather sealed | No | No |
| Max video | 4K30 | 4K30 |
| Max native ISO | ISO 25,600 | ISO 25,600 |
| Body weight | 410 g | 383 g |
| Dimensions | 122 × 84 × 50 mm | 122 × 84 × 49 mm |
| Body material | polycarbonate | polycarbonate |
| Released | 2017-08-31 | 2020-09-18 |
| Discontinued | — | — |
| Status | current | current |
| MSRP | $649 | $699 |
| Current low | $345 | $405 |
| vs MSRP | -47% | -42% |
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.
Both cameras appear in
Curated best-under lists where both of these qualify today.
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.