Skip to content
Specdex
Compare now
Canon 5D Mark III · Body only — full-frame DSLR · 2012
Canon

Canon 5D Mark III · Body only

full-frame DSLR · 2012

78
/ 100
From $3,499
VS
Canon EOS R5 · Body only wins by 14
Canon EOS R5 · Body only — full-frame · 2020
Canon

Canon EOS R5 · Body only

full-frame · 2020

92
/ 100
From $3,899
Specdex verdict

Canon EOS R5 · Body only takes it — here’s why.

In our weighted Specdex score, Canon 5D Mark III · Body only lands at 78 and Canon EOS R5 · Body only at 92. That puts Canon EOS R5 · Body only ahead by 14 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Canon 5D Mark III · Body only if…

  • ✓Mature system, great used market
  • ✓Proven lens lineup
  • ✓Often on sale

Pick Canon EOS R5 · Body only if…

  • ✓Current-gen AF system
  • ✓Proven lens ecosystem
  • ✓Strong video + stills balance
Share this comparison: Share to Reddit X / Twitter

Winner by scenario

Derived from the sub-score breakdown · not a separate test

Ergonomics

Tie

Compared on the ergonomics sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Photo

Canon EOS R5 · Body only

Compared on the photo sub-score

Canon EOS R5 · Body only leads on photo (92 vs 78).

Autofocus

Canon EOS R5 · Body only

Compared on the autofocus sub-score

Canon EOS R5 · Body only leads on autofocus (90 vs 74).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Canon 5D Mark III · Body only 78
vs
92 Canon EOS R5 · Body only

Score breakdown

Canon 5D Mark III · Body only
78
photo 78
video 70
autofocus 74
ergonomics 86
Canon EOS R5 · Body only
92
photo 92
video 88
autofocus 90
ergonomics 86

Specs side-by-side

Canon 5D Mark III · Body only versus Canon EOS R5 · Body only — full spec comparison
Spec Canon 5D Mark III · Body only Canon EOS R5 · Body only
Format
full-frame DSLR
full-frame
Release year
2012
2020

Canon 5D Mark III · Body only

Pros
  • +Mature system, great used market
  • +Proven lens lineup
  • +Often on sale
Cons
  • −Older AF system
  • −Heavier than modern mirrorless
  • −Firmware updates trailed off

Canon EOS R5 · Body only

Pros
  • +Current-gen AF system
  • +Proven lens ecosystem
  • +Strong video + stills balance
Cons
  • −Body price excludes lens
  • −Heavy for travel (flagship)
  • −Learning curve on menus

FAQ: Canon 5D Mark III · Body only vs Canon EOS R5 · Body only

Which is better, Canon 5D Mark III · Body only or Canon EOS R5 · Body only? +

Canon EOS R5 · Body only scores 92 on our weighted rubric — ahead by 14. Your best pick depends on the sub-scores above.

Is Canon 5D Mark III · Body only worth the price? +

At $3,499, Canon 5D Mark III · Body only delivers a Specdex score of 78 — strongest in ergonomics.

Is Canon EOS R5 · Body only worth the price? +

At $3,899, Canon EOS R5 · Body only delivers a Specdex score of 92 — strongest in photo.

Does Canon 5D Mark III · Body only or Canon EOS R5 · Body only last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for photo, Canon 5D Mark III · Body only or Canon EOS R5 · Body only? +

Canon EOS R5 · Body only — leads on photo (92 vs 78). Compared on the photo sub-score.

Which is better for autofocus, Canon 5D Mark III · Body only or Canon EOS R5 · Body only? +

Canon EOS R5 · Body only — leads on autofocus (90 vs 74). Compared on the autofocus sub-score.