Canon EOS 90Dvs EOS RPvs A7 III

GearFrame · Updated March 2026

Canon Canon EOS 90D Canon Canon EOS 90D (2019) From £849 Best for Sports, wildlife & DSLR enthusiasts View Canon EOS 90D
VS
Canon EOS RP Canon EOS RP (2019) From £799 Best for Entry full-frame stills photography View EOS RP
VS
Sony A7 III Sony A7 III (2018) From £1699 Best for All-round photography & video View A7 III

Which should you buy?

Sports, Wildlife & Dslr Enthusiasts — Canon EOS 90D (2019): The best APS-C DSLR Canon ever made — 32MP, 10fps, weather sealing, and an optical viewfinder experience no mirrorless can replicate.

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.

All-Round Photography & Video — A7 III (2018): Still one of the best all-round cameras money can buy — particularly strong used. The A7 III proved that full-frame doesn't have to mean compromises, and nothing at this price point has meaningfully beaten it.

↓ Full specifications below

Canon EOS 90D (2019)

  • You're invested in Canon EF DSLR lenses and don't want to switch systems
  • You shoot wildlife or sports and prefer an optical viewfinder
  • You want a mid-range DSLR upgrade without going mirrorless

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

A7 III (2018)

  • Enthusiast photographers upgrading from APS-C for the first time
  • Working photographers who need reliable AF and weather sealing
  • Anyone who shoots in low light regularly
  • Hybrid shooters needing both stills and video performance

Quick take: The canon eos 90d has the highest resolution at 32mp; the eos rp is the most affordable; only the canon eos 90d, a7 iii are weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Canon EOS 90D (2019)EOS RP (2019)A7 III (2018)
Price £849 £799 £1,699
Sensor 32.5MP APS-C CMOS (Dual Pixel AF) 26.2MP Full-Frame CMOS 24.2MP Full-Frame Exmor R BSI CMOS
Resolution 32.5MP 26.2MP 24.2MP
Video 4K/30p (1.6× crop), FHD/120p 4K/24p (with 1.7× crop), 1080p/60p 4K/30p (6K oversampled), 1080p/120p slow-motion
Autofocus Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) Dual Pixel CMOS AF, 4779 manually selectable positions Phase-detect, 693 points, real-time Eye AF & animal AF
Stabilisation None (no IBIS) None (no IBIS) 5-axis IBIS, 5 stops
Burst Rate 10fps mechanical 5fps mechanical 10fps with AF/AE tracking
Battery Life ~1300 shots (CIPA with OVF) ~250 shots (CIPA) — very limited ~710 shots (CIPA)
Weight 701g body only 485g (body, battery, card) 565g (body, battery, card)
Dimensions 140.7 × 104.8 × 76.8mm 132.5 × 85.0 × 70.0mm 126.9 × 95.6 × 73.7mm
Weather Sealed Yes No Yes
Viewfinder Optical pentaprism, 100% coverage, 0.95× magnification EVF, 2.36M dots, 0.70× magnification EVF, 2.36M dots, 0.78× magnification
Screen 3.0" vari-angle touchscreen 3.0" vari-angle touchscreen, 1.04M dots 3.0" tilting touchscreen, 921k dots
Mount Canon EF / EF-S Canon RF-mount Sony E-mount
Memory Cards Dual SD UHS-II slots Single SD UHS-II Dual SD (UHS-II slot 1, UHS-I slot 2)
Connectivity USB 2.0, Bluetooth, Wi-Fi USB-C, Wi-Fi, Bluetooth USB-C (USB 3.2), Wi-Fi, Bluetooth, NFC
⚡ Compare specs side by side Canon EOS 90D prices → EOS RP prices → A7 III prices →

Compare pairs from this group