Sony A7 IV vs Canon EOS R6 Mark II: Which Should You Buy?

Two of the most popular full-frame mirrorless cameras face off. The Sony A7 IV and Canon EOS R6 Mark II are both excellent cameras, but they excel in different areas. Here's everything you need to know to make the right choice.

Sensor and Image Quality

The Sony A7 IV has a 33MP BSI-CMOS sensor vs the Canon's 40MP CMOS. In practice, both sensors produce outstanding images. The extra megapixels on the Canon allow for more aggressive cropping and larger prints, while the Sony's BSI architecture gives it a slight edge in low-light dynamic range.

Winner: Canon R6 Mark II (more megapixels, comparable noise performance)

Autofocus

This is where both cameras shine. Sony's Real-Time Tracking uses AI to detect and follow eyes, faces, bodies, and even animals. Canon's Dual Pixel CMOS AF II is equally impressive with Intelligent Tracking and Recognition (iTR). In our testing, both systems achieved above 98% focus accuracy in demanding conditions.

Winner: Tie — both are class-leading

Video Capabilities

Sony wins on video specs: the A7 IV shoots 4K/60p 10-bit internally, while the R6 Mark II is limited to 4K/60p with no 10-bit option (though it offers 6K RAW via HDMI). For serious video work, the Sony's internal 10-bit recording is a significant advantage.

Winner: Sony A7 IV

Battery Life

Canon dominates here. The R6 Mark II is rated for approximately 760 shots per charge vs the Sony's 580. For event and wedding photographers, this matters.

Winner: Canon EOS R6 Mark II

Lens Ecosystem

Both brands have excellent native lens lineups. Sony's E-mount has more third-party options (Sigma, Tamron, Voigtländer). Canon's RF mount has Canon's optically superior (but pricier) RF lenses. If you already own Canon EF lenses, the Canon adapter is seamless.

Price

Both cameras are similarly priced at around €2,799 (Sony) and €2,899 (Canon). Check current prices from multiple retailers on the individual product pages.

Verdict

Choose Sony A7 IV if: you prioritise video, already own Sony glass, or want the widest third-party lens selection.
Choose Canon EOS R6 Mark II if: you shoot action and sports, prioritise battery life, already own Canon/EF lenses, or value Canon's colour science.