Upgrade guide · updated 5 November 2026

Should I upgrade from the OM System Olympus E-M10 Mark III to the OM System Olympus E-M10 Mark IV?

Verdict

Upgrading is likely worth it. Both use the Micro Four Thirds mount, so your lenses fit directly.

What you gain

  • 20MP instead of 16.1MP
  • faster bursts (15fps vs 8.6fps)
  • a lighter body (383g vs 410g)
  • 3 years of newer processing and autofocus (2017 → 2020)

What you give up

  • Nothing significant on paper

What it costs

Olympus E-M10 Mark IV newNo longer sold new
Olympus E-M10 Mark IV used (MPB, typical)£400
Your Olympus E-M10 Mark III trade-in (rough estimate)≈ £180
Net cost buying used≈ £220

Trade-in estimates assume about two-thirds of the typical MPB resale price; real offers vary with condition and shutter count.

Frequently asked questions

Should I upgrade from the OM System Olympus E-M10 Mark III to the OM System Olympus E-M10 Mark IV?

The upgrade is likely worth it. You gain 20MP instead of 16.1MP, faster bursts (15fps vs 8.6fps), a lighter body (383g vs 410g), 3 years of newer processing and autofocus (2017 → 2020).

How much does it cost to upgrade from the Olympus E-M10 Mark III to the Olympus E-M10 Mark IV?

The Olympus E-M10 Mark IV costs No longer sold new new and about £400 used at MPB. Trading in a used Olympus E-M10 Mark III might bring roughly £180, so the net cost is around £220 buying used (a rough estimate: get quotes from MPB, Wex and Park Cameras).

Will my Olympus E-M10 Mark III lenses work on the Olympus E-M10 Mark IV?

Both use the Micro Four Thirds mount, so your lenses fit directly.