Sony today announced the Alpha 7 IV, popularly known as the A7 IV. It’s the successor to the A7 III, Sony’s popular entry-level full-frame camera from 2018.
The A7 IV comes with an updated photographic features compared to its predecessors while vastly improving the video capabilities in an attempt to become a true hybrid camera.
The Sony A7 IV features a new 33-megapixel full-frame back-illuminated Exmor R CMOS sensor. The new sensor has an ISO sensitivity range of 50-204,800 and while Sony doesn’t advertise it as such, it has dual native ISO, with the second step kicking in at ISO 3200. Sony claims the sensor has a dynamic range of 15 stops.
The new sensor is mated to the latest generation BIONX XR image processor, the same one found in the flagship Sony Alpha 1. The camera is capable of 10fps of continuous shooting with AF/AE tracking and a larger buffer size compared to its predecessor. The autofocus system uses 759 phase-detection AF points with real-time tracking of objects and real-time Eye AF for tracking people, birds, and, for the first time on a Sony camera, animals.
Sony Alpha 7 IV Memory
The A7 IV can record 4K video using the full width of its sensor. The image is downsampled from 7K down to 4K for all frame rates including and below 30fps. Unlike the A7 III, the A7 IV can also do 4K at 60fps. However, it can only do so in Super 35mm mode, which crops the image and does not use the full width of the sensor. Also unlike the A7 III, the A7 IV can now record videos in full 10-bit depth and 4:2:2 color sampling as well as XAVC S-I intra-frame recording. It also supports the S-Cinetone picture profile usually found in Sony’s cinema cameras.
Sony has also added a few new features that are currently only on the A7 IV and work when the camera is used with a compatible Sony E-mount lens. The AF Assist mode supports focus transitions when using autofocus, and Focus Map visualizes depth of field with colors on screen. There is also a new Breathing Compensation feature, which crops the image slightly on Sony lenses that have a focus breathing issue so that the field of view remains constant even if you move focus from end to end.