The Canon EOS R1 wins 5 of 8 scored specs (burst, stabilization, battery (cipa)); the SL3 wins 3 (resolution, max video, weight). The Canon EOS R1 is $686 cheaper.
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FRONT (WIDTH × HEIGHT)TOP (WIDTH × DEPTH), LENS FACING DOWN
Outer sizes are exact, from the makers' dimensions. Shapes are drawn by us to show each body style; the dashed circle is the lens mount at its real diameter.
BurstThe fastest frames per second the maker quotes. Top speeds often use the electronic shutter and may limit autofocus. Higher helps for sports, wildlife and kids.40 fpsBEST15 fps
StabilizationIn-body stabilisation. Each stop lets you shoot at half the shutter speed without blur, so 8 stops means very steady handheld shots.8.5 stopsBESTNone
ShutterFastest mechanical and electronic shutter speeds. The silent electronic shutter can freeze faster motion, but may bend fast subjects on slower sensors.1/8000 mech · 1/64000 elec1/8000 mech · 1/16000 elec
AutofocusWhat the camera recognises and tracks automatically, and how dark it can get before focus struggles (lower EV is better in low light).People, animals, birds, vehicles, aircraft, trains · down to −7.5 EVPeople, animals
VIDEO
Max videoThe highest video resolution it records internally.6K8KBEST
Best 4K frame rateThe fastest 4K frame rate. 60p and above lets you slow footage down smoothly, and 120p gives 5× slow motion.4K 120p4K 60p
Rolling shutterHow fast the sensor reads out, measured in lab tests. Slower readout bends fast-moving subjects and quick pans in video and electronic-shutter photos; under 10 ms is very good.8.3 ms · 6K full width, CineD—
Log profileA flat picture profile that keeps highlight and shadow detail for colour grading later.C-Log2/C-Log3L-Log
Raw videoRaw keeps the most image data for editing, at much larger file sizes. Some cameras only record it to an external recorder.Internal Canon RAW (+ ProRes RAW over HDMI)None
Open gateRecords the whole sensor area, so you can crop the same clip to both widescreen and vertical video.NoYes
BODY & HANDLING
Battery (CIPA)Shots per charge on the CIPA standard test, using the rear screen. Real-world numbers are often higher.1130 shotsBEST260 shots
WeightBody with battery and card, without a lens.1115 g0 gBEST
ViewfinderElectronic viewfinder resolution and magnification. More dots and a bigger magnification give a sharper, larger view.9.44M-dot, 0.9×5.76M-dot, 0.76×
Rear screenFully articulating screens flip to the front for vlogging; tilting screens are quicker for photos at waist or overhead height.Fully articulatingTilting
Card slotsTwo slots let you record a backup copy at the same time, which matters for paid work like weddings.2x CFexpress BCFexpress B + SD UHS-II
SYSTEM
MountWhich lenses fit natively. Other lenses may work through an adapter.Canon RFL-Mount Alliance
