Sony A7R vs Nikon D800: which full-frame camera should you buy?

Sony A7R vs Nikon D800: which full-frame camera should you buy?

Sony A7R vs Nikon D800 comparison: 02 Autofocus

Sony A7R vs Nikon D800 comparison: 02 Autofocus

In terms of design, the Sony A7R and A7 are identical – but the AF features of the compact system camera stablemates differ in one significant way.

The Sony A7 uses a Hybrid AF system that combines 25 contrast-detect and 117 phase-detect points for both speed (up to 5fps with continuous autofocus) and accuracy.

The Sony A7R uses a ‘traditional’ (ie. slower) contrast detection autofocus set-up with 25 points. Dubbed ‘Fast Intelligent’ autofocus, Sony claim that the A7R’s contrast detect AF is 35% faster than conventional contrast-detection autofocus.

In Live View mode, the Nikon D800 uses the slower but potentially more accurate contrast-detect AF. Shooting with the viewfinder, the Nikon 51-point AF system delivers a quicker response time, although continuous drive is limited to 4fps in FX format mode.

On paper, the cheaper Sony A7 would seem to be the camera to go for if fast AF is essential to your photography, although we’ve yet to push either Sony cameras in testing real-world conditions.

PAGE 1 – Sony A7R vs Nikon D800 comparison: 01 Sensor resolution
PAGE 2 – Sony A7R vs Nikon D800 comparison: 02 Autofocus
PAGE 3 – Sony A7R vs Nikon D800 comparison: 03 Exposure and processing
PAGE 4 – Sony A7R vs Nikon D800 comparison: 04 Build Quality
PAGE 5 – Sony A7R vs Nikon D800 comparison: 05 Viewfinder and LCD screen
PAGE 6 – Sony A7R vs Nikon D800 comparison: 06 Lenses
PAGE 7 – Sony A7R vs Nikon D800 comparison: 07 Video
PAGE 8 – Sony A7R vs Nikon D800 comparison: 08 Connections
PAGE 9 – Sony A7R vs Nikon D800 comparison: 09 Price
PAGE 10 – Sony A7R vs Nikon D800 comparison: our conclusion

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