Sony A7R III
full-frame · 2017
Canon EOS R5
full-frame · 2020
Canon EOS R5 takes it — here’s why.
In our weighted Specdex score, Sony A7R III lands at 84 and Canon EOS R5 at 92. That puts Canon EOS R5 ahead by 8 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Sony A7R III if…
- ✓Mature system, great used market
- ✓Proven lens lineup
- ✓Often on sale
Pick Canon EOS R5 if…
- ✓Current-gen AF system
- ✓Proven lens ecosystem
- ✓Strong video + stills balance
Winner by scenario
Derived from the sub-score breakdown · not a separate testPhoto
Canon EOS R5Compared on the photo sub-score
Canon EOS R5 leads on photo (92 vs 84).
Ergonomics
TieCompared on the ergonomics sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Autofocus
Canon EOS R5Compared on the autofocus sub-score
Canon EOS R5 leads on autofocus (90 vs 80).
Value for money
Sony A7R IIISpecdex score per dollar at MSRP
Sony A7R III more score per dollar ($3,199 vs $3,899).
Score breakdown
Specs side-by-side
| Spec | Sony A7R III | Canon EOS R5 |
|---|---|---|
| Format | full-frame | full-frame |
| Release year | 2017 | 2020 |
Sony A7R III
- +Mature system, great used market
- +Proven lens lineup
- +Often on sale
- −Older AF system
- −Heavier than modern mirrorless
- −Firmware updates trailed off
Canon EOS R5
- +Current-gen AF system
- +Proven lens ecosystem
- +Strong video + stills balance
- −Body price excludes lens
- −Heavy for travel (flagship)
- −Learning curve on menus
FAQ: Sony A7R III vs Canon EOS R5
Which is better, Sony A7R III or Canon EOS R5? +
Canon EOS R5 scores 92 on our weighted rubric — ahead by 8. Your best pick depends on the sub-scores above.
Is Sony A7R III worth the price? +
At $3,199, Sony A7R III delivers a Specdex score of 84 — strongest in ergonomics.
Is Canon EOS R5 worth the price? +
At $3,899, Canon EOS R5 delivers a Specdex score of 92 — strongest in photo.
Does Sony A7R III or Canon EOS R5 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, Sony A7R III or Canon EOS R5? +
Canon EOS R5 — leads on photo (92 vs 84). Compared on the photo sub-score.
Which is better for autofocus, Sony A7R III or Canon EOS R5? +
Canon EOS R5 — leads on autofocus (90 vs 80). Compared on the autofocus sub-score.