Head-to-head · Best Full-Frame Mirrorless Cameras

Canon EOS R5 Mark II vs Sony A1 II

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Canon EOS R5 Mark II comes out ahead by a clear margin (4.8 vs 4.3). The gap is mostly about all-around professionals who want flagship 45MP stills and 8K RAW video in one body — read the strengths below before deciding.

Higher ratedRanked #1 in Best Full-Frame Mirrorless Cameras

Canon EOS R5 Mark II

4.8

3 sources$4,099as of Aug 1

The Canon EOS R5 Mark II is the strongest all-rounder here: a 45MP stacked sensor, 30fps electronic-shutter bursts, 8K RAW video and Eye Control AF in a 746 g body. TechRadar and Photography Blog both gave it a perfect 5 out of 5, and Tom's Guide 4.5 out of 5. It fixes the original R5's overheating reputation and adds subject tracking that holds where the older camera slipped. The reasons to look elsewhere are the price, the switch to LP-E6P batteries that strands an existing set, and the Nikon Z8 doing much of the same work for less.

Strengths

— 45MP stacked BSI CMOS sensor with minimal rolling shutter
— Blackout-free bursts at up to 30fps with the electronic shutter
— 8K RAW recorded internally, with far better thermal behaviour than the original R5

Watch-outs

— Costs $4,099 for the body, a clear premium over the Nikon Z8
— Requires LP-E6P batteries; older LP-E6NH cells trigger a warning and reduced function
— CFexpress Type B media is effectively mandatory for 8K RAW and the fastest bursts

$4,099 · Check Price on Amazon Full review →

Ranked #5 in Best Full-Frame Mirrorless Cameras

Sony A1 II

4.3

2 sources$6,998as of Aug 1

Sports and wildlife professionals are the audience for the Sony A1 II, which Tom's Guide rated 4.5/5 and PCMag 4/5. Stacked sensor, 30 fps burst, and AI subject detection add up to the fastest autofocus-and-capture combination on the market. Price is what keeps it off the default recommendation: at $6,500 you need to be shooting professional sports or wildlife for the extra $2,200 over the Canon R5 II or Nikon Z8 to pay off.

Strengths

— 50 MP stacked BSI CMOS sensor with the fastest readout of any camera here — essentially zero rolling shutter
— 30 fps RAW burst with full AF/AE tracking plus pre-capture
— 8.6K/30p and 4K 120p 10-bit video with AI-driven subject recognition including birds in flight

Watch-outs

— $6,500 MSRP — by far the most expensive camera on this list, nearly 2× the Panasonic S1R II
— Incremental upgrade from the original A1 — reviewers noted it's more 'refinement' than 'revolution'
— Heavy at 743g — the A7R V at 723g or the Nikon Z8's similar weight make that less of a differentiator

$6,998 · Buy at avcstore.com Full review →

How they stack up

Canon EOS R5 Mark II

Best all-rounder: highest editorial rating, with the strongest balance of 45MP stills, 8K RAW video, and AF. Pricier than the Z8.

Sony A1 II

The do-everything flagship — 50MP at 30fps — but by far the most expensive here.

Specs side-by-side

Spec	Canon EOS R5 Mark II	Sony A1 II
Sensor	45MP Stacked BSI CMOS	50MP Stacked BSI CMOS
ISO	100–51200 (exp. 50–102400)	100–32000 (exp. 50–102400)
Video	8K/30p RAW, 4K/120p	8K/30p, 4K/120p
Stabilization	IBIS, up to 8.5 stops	IBIS, up to 8.5 stops
Weight	746 g	743 g
Storage	CFexpress Type B + SD UHS-II	Dual CFexpress Type A / SD UHS-II

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