Sony unveiled the latest in its line of interchangeable lens mirrorless cameras on Tuesday, debuting the A7R IV, its top-of-the-line full-frame digital shooter aimed at pros. The new camera packs a walloping 61-megapixel sensor, and will retail for $3,500 when it goes on sale this September.
The camera’s image resolution is a “world first” for a 35mm-equivalent full-frame digital sensor, Sony notes, and that’s not where the improvements on this successor to the wildly popular A7R III end: The A7R IV also has 10fps rapid shooting with continuous autofocus and autoexposure tracking capabilities; 567 phase-detect autofocus points that cover 74% of the frame; real-time eye autofocus tracking for stills and movies, which can handle both human and animal subjects; 4K HDR movie recording without any pixel binning and with S-Log 2/3 support for editing (although without a 60p mode, as it caps out at 30p); ISO range of 100-32000 (and 50-102400 expandable); battery life of around 539 shots with the EVF, or 670 shots without; and much more.
This Sony camera is clearly a shot across the bow at recent entrants into the full-frame mirrorless camera market, including Nikon and Canon, and it looks like Sony will be upping one of its biggest advantages by offering even better subject-tracking autofocus, which is a category where it already has a strong lead. The high-resolution sensor is another area where the competition will be left behind, since the Nikon Z7 captures at 45.7 MP and the Canon R maxes out at 30.3 MP.
Real-time eye autofocus in movie recording will also help a lot for video shooters, after Sony introduced it to still shooting for the A7 and A7R III via a firmware update in April. Touch tracking allows shooters to just tap the thing they want to maintain autofocus on using the back display LCD while shooting, and a new digital audio interface added to the camera’s hot shoe connector means recording with a shotgun mic that supports the feature, without any additional cable clutter.
The A7R IV also offers five-axis in-body image stabilization, a 5.76 million-to UXGA OLED EVF, boosted weather and dust resistance, wireless tethered shooting capabilities and dual UHS-II SD card slots for storage.