Head to head · specs cited · drawn to scale
Canon EOS 90D vs Canon EOS R3
Every spec below is quoted from the makers' official pages — where a figure isn't published we say so rather than guess. Sizes are drawn at true relative scale from published dimensions, and the bag-fit row is computed against our measured bag catalog.
The 3 biggest published differences
- Battery life (CIPA): the 90D leads at 1300 (at 23°C, AE 50%, FE 50%, LP-E6N) vs the R3's 620 (viewfinder, power saving, +23°C, LP-E19).
- Weight (body): the 90D leads at 701 g vs the R3's 1015 g.
- Resolution (MP): the 90D leads at 32.5 vs the R3's 24.1.
 90D Canon EF |  R3 Canon RF | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | APS-C (22.3mm x 14.8mm) | Full-frame (approx. 36.0 x 24.0 mm) |
| Lens mount | Canon EF | Canon RF |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | CMOS | Full-frame back-illuminated stacked CMOS sensor |
| Sensor size | APS-C (22.3mm x 14.8mm) | Full-frame (approx. 36.0 x 24.0 mm) |
| Resolution (MP) | 32.5 | 24.1 |
| In-body stabilisation | none | 8 (combined with compatible RF lens IS, per usa.canon.com/shop/p/eos-r3) |
| ISO range | 100 | 100 |
| Autofocus & Speed | ||
| AF system | TTL-CT-SIR with CMOS sensor (viewfinder); Dual Pixel CMOS AF (Live View) | Dual Pixel CMOS AF II |
| Subject detection | 45 cross-type AF points (45 f/5.6 cross-type, 27 f/8 points [9 cross-type]); Live View Face detection and Tracking AF, Eye AF | Vehicle Detection as well as Eye, Face, Head, and Animal Detection (usa.canon.com/shop/p/eos-r3); 1053 AF zones (39x27) per KB specifications |
| Burst — mechanical | 10 | 12 |
| Burst — electronic | —, not published | 30 |
| Video | ||
| Max video | 4K UHD 3840x2160 (29.97/25 fps) | 6K RAW / 4K UHD up to 60p (oversampled) |
| Codecs / sampling | MP4 (MPEG-4 AVC/H.264, Linear PCM/AAC audio) | MP4 (ALL-I, IPB Standard, IPB Light); H.264/H.265 |
| Recording limit | Max duration 29 min 59 sec, max file size 4GB (unless ExFAT formatted) | not published (no fixed clip-length limit stated on spec page beyond card/thermal limits) |
| Viewfinder & Screen | ||
| EVF resolution | —, not published | 5,760,000 dots |
| EVF magnification | Approx. 0.95x (optical viewfinder, pentaprism) | Approx. 0.76x |
| Rear screen | Touch screen Vari-angle 7.7cm (3.0") 3:2 Clear View II TFT, approx. 1040K dots | 3.2-inch TFT color LCD, Approx. 4,150,000 dots, vari-angle touchscreen |
| Body & Handling | ||
| Dimensions (W×H×D) | 140.7 × 104.8 × 76.8 mm | 150 × 142.6 × 87.2 mm |
| Weight (body) | 701 g | 1015 g |
| Weather sealing | Water / Dust resistance: Yes | Dust and drip resistance equal to the EOS-1D X Series (usa.canon.com/shop/p/eos-r3) |
| Shutter durability | —, not published | —, not published |
| Power & Storage | ||
| Battery life (CIPA) | 1300 (at 23°C, AE 50%, FE 50%, LP-E6N) | 620 (viewfinder, power saving, +23°C, LP-E19) |
| Battery | LP-E6N | LP-E19 |
| Card slots | 1x SD, SDHC, SDXC (UHS-II compatible) | 1x CFexpress (Type B), 1x SD (UHS-II) |
| Connectivity | ||
| USB | USB Micro-B | USB Type-C, SuperSpeed Plus USB (USB 3.2 Gen 2) equivalent |
| Wireless | Wireless LAN (IEEE802.11b/g/n), 2.4 GHz only; Bluetooth Specification version 4.1 (BLE) | IEEE 802.11a/ac/b/g/n Wi-Fi; Bluetooth Specification Version 5.0 (BLE) |
| HDMI | HDMI mini output | HDMI micro OUT terminal (Type D) |
| Price | ||
| Launch price | —, not published | not published (current usa.canon.com/shop/p/eos-r3 Regular Price shown as $5,399.00, not confirmed as original launch MSRP) |
| Size, to scale | ||
Front view, drawn at the same scale from each maker's published W×H (mm). | ||
| Smallest bag that fits | ||
| Body + standard zoom | Think Tank Mirrorless Mover 20 V2 Fits body only · View at B&H Photo Video | WANDRD Essential Camera Cube (for PRVKE 21) Fits with 24-105 f/4 · View at WANDRD |
Sources
“Effective Pixels Approx. 32.5 MP ... AF System / Points 45 cross-type AF points ... Continuous Shooting Max. Approx. 10fps ... Type Pentaprism, Magnification Approx. 0.95x ... Type Touch screen Vari angle 7.7cm (3.0") 3:2 Clear View II TFT, approx. 1040K dots ... Battery life Approx. 1300 (at 23°C, AE 50%, FE 50%) ... Water / Dust resistance Yes”
official · R3 specifications: Canon USA (official Knowledge Base: EOS R3 Specifications) · accessed 2026-07-10
“Type: Full-frame back-illuminated stacked CMOS sensor | Effective pixels: Max. approx. 24.1 megapixels ... Number of AF zones | Still photos | Max. 1053 zones (39 x 27) ... High-speed continuous shooting+ | One-Shot AF | Max. approx. 12 shots/sec. ... Max. approx. 30 shots/sec. (electronic) ... Dot count: Approx. 5,760,000 dots ... Compatible battery packs | LP-E19”
Spec values are the manufacturers' published figures, compared factually — we don't rank cameras. Fit verdicts are planning estimates from published interior dimensions, not guarantees. See methodology.
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