Head to head · specs cited · drawn to scale
Canon EOS R 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 R3 leads at 620 (viewfinder, power saving, +23°C, LP-E19) vs the R's Approx. 370 shots (at 23°C).
- EVF resolution: the R3 leads at 5,760,000 dots vs the R's 3.69 Million dots (1280x960).
- Weight (body): the R leads at 660 g vs the R3's 1015 g.
 R Canon RF |  R3 Canon RF | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | Full-frame (35mm) | Full-frame (approx. 36.0 x 24.0 mm) |
| Lens mount | Canon RF | Canon RF |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | 36 x 24 mm CMOS | Full-frame back-illuminated stacked CMOS sensor |
| Sensor size | Full-frame (35mm) | Full-frame (approx. 36.0 x 24.0 mm) |
| Resolution (MP) | Approx. 30.3 megapixels | 24.1 |
| In-body stabilisation | none | 8 (combined with compatible RF lens IS, per usa.canon.com/shop/p/eos-r3) |
| ISO range | Auto 100-40000 (in 1/3-stop or whole stop increments); ISO can be expanded to L:50, H1: 51200, H2: 102400 | 100 |
| Autofocus & Speed | ||
| AF system | Phase-difference detection system with image sensor (Dual Pixel CMOS AF) | Dual Pixel CMOS AF II |
| Subject detection | Face + tracking (Face Detection and Tracking 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 | Max. Approx. 8fps (Max. 5fps with AF Tracking) | 12 |
| Burst — electronic | —, not published | 30 |
| Video | ||
| Max video | 4K (16:9) 3840 x 2160 (29.97, 25, 24, 23.98 fps) | 6K RAW / 4K UHD up to 60p (oversampled) |
| Codecs / sampling | MPEG4 AVC/H.264 variable (average) bit rate; YCbCr4:2:0 (8-bit) internal; Audio Linear PCM / AAC; Canon Log Yes Log 1 | MP4 (ALL-I, IPB Standard, IPB Light); H.264/H.265 |
| Recording limit | 4K and Full HD - Max duration 29min 59sec. (excluding High Frame Rate movies). No 4GB file limit with exFAT SDXC | not published (no fixed clip-length limit stated on spec page beyond card/thermal limits) |
| Viewfinder & Screen | ||
| EVF resolution | 3.69 Million dots (1280x960) | 5,760,000 dots |
| EVF magnification | Approx. 0.76x | Approx. 0.76x |
| Rear screen | 8.01cm (3.15") Clear View LCD II, approx. 2.1 million dots, Vari-angle touchscreen (capacitive touch) | 3.2-inch TFT color LCD, Approx. 4,150,000 dots, vari-angle touchscreen |
| Body & Handling | ||
| Dimensions (W×H×D) | 135.8 × 98.3 × 84.4 mm | 150 × 142.6 × 87.2 mm |
| Weight (body) | 660 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) | Approx. 370 shots (at 23°C) | 620 (viewfinder, power saving, +23°C, LP-E19) |
| Battery | Rechargeable Li-ion Battery LP-E6N (supplied)/LP-E6 | LP-E19 |
| Card slots | 1x SD/SDHC/SDXC and UHS-II | 1x CFexpress (Type B), 1x SD (UHS-II) |
| Connectivity | ||
| USB | SuperSpeed USB 3.1 USB C connector | USB Type-C, SuperSpeed Plus USB (USB 3.2 Gen 2) equivalent |
| Wireless | Wireless LAN (IEEE802.11b/g/n) (2.4 GHz only), with Bluetooth support | IEEE 802.11a/ac/b/g/n Wi-Fi; Bluetooth Specification Version 5.0 (BLE) |
| HDMI | HDMI mini out (Type C, HDMI-CEC compatible) | 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 | Tenba BYOB 9 Slim Backpack Insert Fits with 24-105 f/4 · View at B&H Photo Video | WANDRD Essential Camera Cube (for PRVKE 21) Fits with 24-105 f/4 · View at WANDRD |
Sources
“36 x 24 mm CMOS; Effective Pixels Approx. 30.3 megapixels; Continuous Shooting Max. Approx. 8fps, Max. 5fps with AF Tracking; Viewfinder 0.5-inch OLED colour EVF, Dot count 3.69 Million dots (1280x960), Magnification Approx. 0.76x; ISO Auto 100-40000”
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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