Sony a7 IVvsCanon EOS R8: Specs Compared

The a7 IV resolves 33 MP, and the EOS R8 resolves 24.2 MP. That roughly nine-megapixel gap is the difference between cropping a landscape or a portrait hard and still holding detail for a large print. If you shoot wide and crop in post, or deliver to clients who want room to reframe, the Sony's files simply survive more punishment.

The EOS R8 counters on light sensitivity: its native range reaches ISO 102,400 against the Sony's 51,200. For dim venues where you cannot add light, that headroom is real, though you should expect noise rather than clean images at the very top. Reach for the Sony when detail matters most, and the Canon when the light runs out.

Both record 4K at up to 60 fps, and both offer H.264 and HEVC with 10-bit depth. The catch is how the Sony gets there: full-width 4K stops at 30 fps, and anything faster forces a Super35mm crop that narrows your field of view and costs you wide-angle framing. The Canon delivers 60 fps across the full width of the sensor, so your lenses behave the way you framed them.

Neither camera records raw video internally or externally, so plan on 10-bit log instead. The practical read: if you mix slow motion and wide shots in the same scene, the EOS R8 keeps your framing consistent while the Sony makes you change lenses or move the camera back.

The a7 IV carries in-body stabilization rated at 5.5 stops, and the EOS R8 has none. That is the single biggest everyday split between them. Handheld shooting in low light, stabilized video while walking, and long lenses at slow shutter speeds all favor the Sony, and it means fewer shots lost to shake.

The Canon gives up that steadiness to weigh 461 g against the Sony's 658 g. That near-200 g difference is noticeable after a full day of carrying a camera, and it is part of why the EOS R8 suits travel and casual walkaround use. If you mostly shoot from a tripod or with stabilized lenses, the Canon's omission costs you less.

Burst speed splits by shutter. The a7 IV shoots 10 fps mechanically, though it drops to 6 fps for lossless or uncompressed RAW. The EOS R8 manages 6 fps mechanically but leaps to 40 fps electronically, with a pre-burst mode that buffers frames before you fully press the shutter.

That combination makes the Canon the stronger pick for fast, unpredictable motion, and its subject detection covers vehicles and aircraft alongside people and animals. The Sony detects people, animals and birds only. If your subjects are trains, planes or cars, the EOS R8 tracks them and the a7 IV does not.

The a7 IV is rated for 580 shots per charge and offers two card slots. The EOS R8 is rated for 370 and has one slot. On a wedding or event day, the Sony's battery number is the difference between finishing on one charge and carrying spares, and the second slot lets you write backups or keep shooting when one card fills.

For a hobbyist doing a weekend outing, 370 shots is usually plenty and the extra card slot rarely matters. The Sony's numbers are aimed at people who cannot afford to stop and swap. Both cameras charge and take power over USB, but the Sony's full-size HDMI port is more robust than the Canon's micro connector for tethered video work.

The Sony's viewfinder is the more detailed of the two at 3.69 M dots and 0.78x magnification, against 2.36 M dots and 0.7x on the Canon. Manual focus and composition in bright light are easier through the larger, sharper finder, which matters for portrait and macro shooters who focus precisely.

The Canon wins on the rear panel: 1.62 M dots versus 1.04 M dots, on a slightly larger 3-inch screen. Both articulate fully, so either works for vlogging and low-angle framing. Prioritize the Sony for through-the-finder work and the Canon for review and touch operation.