Upgrade guide · updated 5 November 2026

Should I upgrade from the Canon EOS 5D Mark IV to the Canon EOS R5?

Verdict

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

  • 45MP instead of 30.4MP
  • faster bursts (20fps vs 7fps)
  • better video (8K 30p vs 4K 30p (crop))
  • in-body stabilisation
  • a lighter body (738g vs 890g)
  • a mirrorless electronic viewfinder showing the exposure before you shoot, and modern subject-detection autofocus
  • 4 years of newer processing and autofocus (2016 → 2020)

What you give up

  • Nothing significant on paper

What it costs

EOS R5 newNo longer sold new
EOS R5 used (MPB, typical)£1,620
Your EOS 5D Mark IV trade-in (rough estimate)≈ £420
Net cost buying used≈ £1,200

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

Other upgrade paths

Frequently asked questions

Should I upgrade from the Canon EOS 5D Mark IV to the Canon EOS R5?

The upgrade is likely worth it. You gain 45MP instead of 30.4MP, faster bursts (20fps vs 7fps), better video (8K 30p vs 4K 30p (crop)), in-body stabilisation.

How much does it cost to upgrade from the EOS 5D Mark IV to the EOS R5?

The EOS R5 costs No longer sold new new and about £1,620 used at MPB. Trading in a used EOS 5D Mark IV might bring roughly £420, so the net cost is around £1,200 buying used (a rough estimate: get quotes from MPB, Wex and Park Cameras).

Will my EOS 5D Mark IV lenses work on the EOS R5?

Canon's EF-EOS R adapter gives full autofocus with EF and EF-S lenses, so your existing lenses carry over.