EOS RPvs A7R III

GearFrame · Updated March 2026

Canon EOS RP Canon EOS RP (2019) Starting from £799 new Best for Entry full-frame stills photography View EOS RP
VS
Sony A7R III Sony A7R III (2017) Starting from £1799 new Best for Landscape, studio & commercial photography View A7R III

GearScore™ Verdict — Which should you buy?

Entry Full-Frame Stills Photography — EOS RP (2019): An affordable gateway into the RF system. The RP makes sense as a stepping stone camera — if you're committed to Canon RF glass, this is the cheapest full-frame body to buy those lenses for. Just manage expectations on video and battery life.

Landscape, Studio & Commercial Photography — A7R III (2017): The camera that converted professionals to mirrorless — 42MP, IBIS, and 10fps in a body that still competes today.

↓ Full specifications below

EOS RP (2019)

  • Canon users who want to start investing in RF glass affordably
  • Stills photographers who shoot primarily in good light
  • Anyone coming from a Canon DSLR wanting the RF system at low cost
  • Travel photographers who prioritise compactness over video specs

A7R III (2017)

  • Landscape and studio photographers who need 42MP resolution at a used-price discount vs A7R IV
  • Canon/Nikon DSLR professionals considering a mirrorless switch at a lower investment
  • Commercial and product photographers who want full-frame resolution with IBIS for handheld work
  • Portrait photographers who want the sharpest possible full-frame files for large print work

Quick take: The a7r iii has the highest resolution at 42mp; the eos rp is the most affordable; only the a7r iii is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification EOS RP (2019)A7R III (2017)
Price £799 £1,799
Sensor 26.2MP Full-Frame CMOS 42.4MP full-frame BSI Exmor R CMOS
Resolution 26.2MP 42.4MP
Video 4K/24p (with 1.7× crop), 1080p/60p 4K/30p (full-frame readout), 1080p/120p
Autofocus Dual Pixel CMOS AF, 4779 manually selectable positions 399 phase-detect + 425 contrast AF points — real-time Eye AF
Stabilisation None (no IBIS) 5-axis IBIS — 5.5 stops
Burst Rate 5fps mechanical 10fps with AF/AE tracking
Battery Life ~250 shots (CIPA) — very limited ~650 shots (CIPA)
Weight 485g (body, battery, card) 650g body only
Dimensions 132.5 × 85.0 × 70.0mm 126.9 × 95.6 × 73.7mm
Weather Sealed No Yes
Viewfinder EVF, 2.36M dots, 0.70× magnification EVF, 3.69M dots, 0.78× magnification
Screen 3.0" vari-angle touchscreen, 1.04M dots 3.0" touchscreen, tilting
Mount Canon RF-mount Sony FE mount (full-frame E-mount)
Memory Cards Single SD UHS-II Dual SD slots (one UHS-II)
Connectivity USB-C, Wi-Fi, Bluetooth USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack
Genre EOS RPA7R III
Portrait
9.0
9.0
Travel
7.0
Street
7.0
7.0
Video
4.0
Wildlife
4.0
Landscape
9.0
Vlogging & Video
7.0
Wedding
7.0
Sports
4.0
⚡ Compare specs side by side EOS RP prices → A7R III prices →

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