Should I upgrade from the Canon EOS-1D X Mark III to the Canon EOS R3?
Upgrading is likely worth it. Canon's EF-EOS R adapter gives full autofocus with EF and EF-S lenses, so your existing lenses carry over.
What you gain
- 24.1MP instead of 20.1MP
- faster bursts (30fps vs 16fps)
- in-body stabilisation
- a lighter body (1015g vs 1440g)
- a mirrorless electronic viewfinder showing the exposure before you shoot, and modern subject-detection autofocus
What you give up
- Nothing significant on paper
What it costs
| EOS R3 new | No longer sold new |
| EOS R3 used (MPB, typical) | £2,600 |
| Your EOS-1D X Mark III trade-in (rough estimate) | ≈ £1,110 |
| Net cost buying used | ≈ £1,490 |
Trade-in estimates assume about two-thirds of the typical MPB resale price; real offers vary with condition and shutter count.
Specs side by side
Canon EOS-1D X Mark III specs · Canon EOS R3 specs · best lenses for the EOS R3
Other upgrade paths
Frequently asked questions
Should I upgrade from the Canon EOS-1D X Mark III to the Canon EOS R3?
The upgrade is likely worth it. You gain 24.1MP instead of 20.1MP, faster bursts (30fps vs 16fps), in-body stabilisation, a lighter body (1015g vs 1440g).
How much does it cost to upgrade from the EOS-1D X Mark III to the EOS R3?
The EOS R3 costs No longer sold new new and about £2,600 used at MPB. Trading in a used EOS-1D X Mark III might bring roughly £1,110, so the net cost is around £1,490 buying used (a rough estimate: get quotes from MPB, Wex and Park Cameras).
Will my EOS-1D X Mark III lenses work on the EOS R3?
Canon's EF-EOS R adapter gives full autofocus with EF and EF-S lenses, so your existing lenses carry over.