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 ends: 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 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 shotgun mic that support 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.