Camera Body and Design

• If you've held a Sony Alpha camera, you probably have noticed that they tend to follow a very similar design path. Even when they are different, like the subtle body changes to the A9, the general aesthetic is the same. Holding the A7 III feels exactly like holding the A7R III...because they are exactly the same. From a body design perspective, it is impossible to visually tell the A7R III and the A7 III apart aside from the model number on the front and back of the camera.
• If you're new to the body and want to compare it to the A7 II, the biggest and most noticeable difference is on the back of the camera, where Sony removed the AF/MF and AEL switch and changed it to a joystick/toggle. This same change was made on the A7R III and allows you to more easily navigate a menu or adjust focus points while shooting. Though the A7 III has a touchscreen and the control wheel on the back of the camera are useful for most of the things you might find yourself needing the joystick for, it's still an addition that many customers asked for and therefore Sony delivered.

• Other changes include moving a few of the custom function buttons around and relocating the video record button, which used to be up near the shutter button, to the rear of the camera to the right of the EVF.
• Speaking of the EVF, the A7 III features a high-resolution, high-contrast, fast-start XGA OLED Tru-Finder with approximately 2.3 million dots for extremely accurate, true-to-life detail reproduction. Standard or High display quality settings are available for both the viewfinder and monitor as well. The Mark III's EVF is also noticeably larger than the Mark II's, with a magnification of 0.78x versus 0.71x.
• The new camera also features what Sony is calling 'My Menu' functionality, which allows up to 30 menu items to be registered for instant recall when needed. You can also apply star ratings to your still images through the camera controls for easier image playback and review, and edit the first three characters of all still image files. Additionally, there is a total of 81 functions that are assignable to 11 custom buttons, and the camera is both dust and moisture resistant.

The A7 III and its 24.2 megapixel sensor

• Opting for a smaller and more manageable 24.2-megapixel sensor, the A7 III is equipped with a back-illuminated Exmor R CMOS image sensor that is paired with a front-end LSI that Sony says effectively doubles the readout speed of the image sensor, as well as an updated BIONZ X processing-engine that boosts processing speed by approximately 1.8 times compared to the A7 II.
• These components work together to allow the camera to shoot at faster speeds while also enabling its impressive ISO range of 100 - 51,200 (expandable to ISO 50 - 204,800 for still images) and an overall 1.5 stop improvement in image quality over the A7 II. The camera also features the same ~15 stops of dynamic range at low sensitivity settings found on the A7R III, that Sony says ensures outstanding overall performance at all settings and in all shooting conditions, with significant advancements in accurate color reproductions of skin tones and the vibrant natural colors.
• The A7 III can also output 14 bit RAW format even in silent and continuous shooting modes, and is equipped with a 5-axis optical image stabilization system that results in a 5.0-stop shutter speed advantage.

Bringing A9-like autofocus performance to the table

• The A7 III brings many of the video features found in the A7R III to the table, including 4K UHD (3840 x 2160 pixels) video recording across the full width of the full-frame image sensor, using a full pixel readout without pixel binning to collect about 2.4 times the amount of data required for 4K movies, oversampling it to produce high quality 4K footage.
• An HLG (Hybrid Log-Gamma) picture profile is available on the A7 III as well, which supports an Instant HDR workflow, allowing HDR (HLG) compatible TV's to playback 4K HDR imagery.
• Further, both S-Log2 and S-Log3 are available for increased color grading flexibility, as well as Zebra functionality, Gamma Display assist and proxy recording. The camera can also record Full HD at 120 fps at up to 100 Mbps, allowing footage to be reviewed and eventually edited into 4x or 5x slow motion video files in Full HD resolution with AF tracking.

• Sony's newest full-frame camera is equipped with a variety of enhanced capabilities that were first implemented in the A9 and then again in the A7R III. These include dual media slots, with support in one slot for UHS-II type SD memory cards (the second slot supports UHS-I SD or Memory Stick PRO Duo cards, and in cases of dual writing, top write speeds are limited to the slowest card). You also have a variety of options for storing content in each of the cards, including separate JPEG / RAW recording, separate still image / movie recording, relay recording and more.
• The A7 III is also is capable of seamlessly transferring files to a smartphone, tablet, computer or FTP server via Wi-Fi (with NFC) and now includes Bluetooth, while also offering a SuperSpeed USB (USB 3.1 Gen 1) USB Type-C terminal for increased flexibility in power supply and faster image transfer speed during tethered shooting. The camera still has a Multi Micro-B USB 2.0 port, Micro HDMI (Type D) port, 3.5mm stereo microphone jack (with power), 3.5mm stereo headphone jack, Multi Interface Hot Shoe, and an IR remote receiver.
• Battery life has been greatly extended as well -- with a CIPA rating of up to 710 shots per charge when using the LCD monitor or 610 shots using the EVF, the A7 Mark III offers the world's longest battery life of any mirrorless camera (without a battery grip). The new camera utilizes Sony's Z-series NP-FZ100 battery pack that has approximately 2.2 times the capacity of the W-series NP-FW50 battery utilized in the A7 II. This is the same battery that brought excellent battery life to both the A9 and A7R III. In-camera charging is supported and an AC/USB adapter is provided, but a dedicated battery charger is not included.

• Newly developed back-illuminated 24.2MP full-frame Exmor R CMOS sensor to capture even the finest detail in most conditions
• Approx. 15-stops of dynamic range to showcase subtle graduations from shadows to highlights
• Impressive ISO range of 100-51,200 which is expandable to 50-204,800, allowing for noise-free low-light capture
• 14-bit RAW capture even in silent and continuous shooting modes
• 5-axis 5-step in-body image stabilisation, making it possible for users to shoot handheld at lower shutter speeds, while also providing smoother video capture
• 4D Focus – The A7 Mark III Features a massive 693 phase-detection, and 425 contrast detection AF points
• With implementation of focal-plane phase-detection technology, the camera's autofocus system is approximately twice as fast as in previous models
• Like the flagship A9, the camera features enhanced AF tracking, allowing for precise focus results when shooting video, or in continuous/burst modes with moving subjects
• Utilise the touch screen to find focus in a shot thanks to the A7 Mark III's Touch Focus and Touch Pad functions. Either tap on the rear screen to find your focus, or intuitively drag the focus frame across the shot while using the viewfinder
• Shoot in a continuous burst at up to 10 frames per second with AF/AE tracking, or up to 8 frames per second burst shooting when in Live View mode
• Capture stunning 4K High Dynamic Range video (without pixel binning) and make the most of the new Hybrid Log Gamma profile for extra flexibility in post-production
• Unlike the previous A7 model, the Mark III uses the high-capacity NP-FZ100 battery, allowing users to shoot up to 710 images on one charge.