Sony Alpha 7S III

    86
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    Highlights

    • 12.1 MP Full Frame BSI-CMOS Sensor
    • 80 - 102,400 Native ISO
    • 759 Focus Points
    • 5-Axis Image Stabilization
    • 3.0" 1,229k dot Fully Articulated Screen
    • 0.64" 9,437k dot Electronic (OLED) Viewfinder
    • 10.0 fps Continuous Shooting
    • 3840 x 2160 Video Shooting
    • 13 h Video Recording Limit
    • Sony S-Log 2, Sony S-Log 3
    • Built-In Wi-Fi
    • Wheather Sealed Body
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    Disclosure: We earn money from the affiliate links to products associated with content in this article.

    Overview

    Sony Alpha 7S III was announced in 2020 and is a Full Frame (35.6 x 23.8 mm) Mirrorless camera with 12.1 Megapixel BSI-CMOS sensor. Its native ISO ranges from 80 to 102,400 and expands to 50 - 409,600 in boosted mode. The camera has a Fully Articulated 3.0" screen with 1,229k dot resolution and built-in 0.64" Electronic (OLED) viewfinder with 9,437k dot resolution. It has a built-in 5-Axis Sensor Shift in body image stabilization.

    Sony Alpha 7S III can capture video up to 3840 x 2160 resolution with no recording time limit.


    Here is the Sony Alpha 7S series lineup, where you can view and compare the main specifications of the cameras within the same series.

    Sony Alpha 7S series lineup
    Model Date Sensor Native ISO Screen Price
    Image cannot be found Sony a7S III July
    2020
    12.1 MP
    Full Frame
    80 - 102,400 Articulated 3.0"
    1,229k dot
    Touchscreen
    Image cannot be found Sony a7S II October
    2015
    12.2 MP
    Full Frame
    100 - 102,400 Tilting 3.0"
    1,229k dot
    Image cannot be found Sony a7S April
    2014
    12.2 MP
    Full Frame
    100 - 409,600 Tilting 3.0"
    1,230k dot

    You can view their side-by-side comparison here: Sony Alpha 7S III vs Alpha 7S II vs Alpha 7S.

    Pros and Cons

    In this section we present pros and cons of Sony Alpha 7S III.

    PROS

    •   Video Capture
    •   Large Sensor
    •   80 Lowest Native ISO
    •   102,400 Highest Native ISO
    •   759 Focus Points
    •   Touch-to-Focus
    •   Face Detection
    •   Live View Autofocus
    •   Animal Eye Detection
    •   Image Stabilization
    •   Digital Image Stabilization
    •   Fully Articulated Screen
    •   Touch Screen
    •   Large Viewfinder - 0.64"
    •   High Resolution Viewfinder - 9,437k dot
    •   High Max Shutter Speed (Mechanical or 1st Curtain) - 1/8000 sec
    •   High Video Resolution - 3840 x 2160
    •   10-bit 4:2:2 Color
    •   No crop on 4K Videos
    •   Webcam Functionality
    •   Unlimited Video Recording
    •   High Video Recording Limit
    •   High USB Speed
    •   HDMI Output
    •   Built-In Wi-Fi
    •   Built-In Bluetooth
    •   Environmental Sealing
    •   USB Charging
    •   2 Storage Slots
    •   Orientation Sensor

    CONS

    •   Low Resolution Sensor - 12.1 Megapixel
    •   No Built-in GPS
    •   Short Battery Life - 600 shots

    And here are some specifications which fall into average criteria and are neither in PROs nor in CONs category:

    AVERAGE

    •   Price
    •   -6 EV Min AF Detection
    •   Screen Size - 3.0"
    •   Screen Resolution - 1,229k dot
    •   Max Continuous Shooting - 10.0 fps
    •   Max Flash Sync Speed - 1/250 sec
    •   DxO Overall Score - 85
    •   Weight - 699 g (1.54 lb / 24.66 oz)

    Predecessor

    Here we are comparing Sony Alpha 7S III to its predecessor Alpha 7S II and displaying the major changes.

    UPGRADES Sony Alpha 7S III vs Sony Alpha 7S II
    Sensor Type BSI-CMOS vs CMOS
    Lower Native ISO 80 vs 100
    More Powerful Processor BIONZ XR vs BIONZ X
    Lower Min AF Detection -6 EV vs -4 EV
    More Focus Points 759 vs 169
    Touch-to-Focus vs
    Animal Eye Detection vs
    Phase Detection for Autofocus vs
    Digital Image Stabilization vs
    Screen Type Fully Articulated vs Tilting
    Touch Screen vs
    Larger Viewfinder 0.64" vs 0.5"
    Higher Viewfinder Magnification (35mm equivalent) 0.91x vs 0.78x
    Higher Resolution Viewfinder 9,437k dot vs 2,359k dot
    Higher Max Continuous Shooting 10.0 fps vs 5.0 fps
    Average Metering vs
    Higher DxO Low Light ISO 3900 vs 2993
    Higher DxO Color Depth 24.2 vs 23.6
    Higher DxO Dynamic Range 13.4 vs 13.3
    Unlimited Video Recording vs
    Higher Video Recording Limit 13 hours vs 30 min
    Higher USB Speed USB 3.2 Gen 1x1 (5 GBit/sec) vs USB 2.0 (480 Mbit/sec)
    Wi-Fi Version Wi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz vs 802.11b/g/n, 2.4 GHz
    Built-In Bluetooth vs
    Longer Battery Life 600 shots vs 370 shots
    More Storage Slots 2 vs 1
    DOWNGRADES Sony Alpha 7S III vs Sony Alpha 7S II
    More Expensive $3499 (body only) vs $3000
    Lower Sensor Resolution 12.1 Megapixel vs 12.2 Megapixel
    Heavier 699 g (1.54 lb / 24.66 oz) vs 627 g (1.38 lb / 22.12 oz)

    For more detailed comparison between the models please visit Sony Alpha 7S III vs Alpha 7S II.

    Screen and Viewfinder

    Fully Articulated Touchscreen

    Sony Alpha 7S III has a 3.0" Fully Articulated touchscreen with 1,229k dot resolution. Fully articulated screen makes this camera selfie and vlogger friendly and generally very useful for video shooting.

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    Sony Alpha 7S III with Fully Articulated screen


    Electronic (OLED) Viewfinder

    Camera has a built-in 0.64" Electronic (OLED) viewfinder with 9,437k dot resolution. It has a 100% coverage and 0.91x magnification.

    Sensor

    BSI-CMOS Sensor

    Sony Alpha 7S III features a 12.1 megapixel Full Frame BSI-CMOS sensor with dimensions of 35.6 x 23.8 mm and a total area of 847.3 mm2. Its native ISO range is 80 - 102,400 and expands to 50 - 409,600 in boosted mode.

    The camera has BSI-CMOS sensor, short for Backside Illuminated Complementary Metal-Oxide-Semiconductor sensor. In traditional CMOS sensors, the wiring and circuitry are located on the front side of the sensor, which can block some of the incoming light. BSI technology flips this design by placing the photosensitive elements (pixels) on the backside of the sensor, allowing more light to reach the pixels. This significantly enhances light sensitivity and improves low-light performance. BSI-CMOS sensors are particularly effective in low-light conditions, as they can capture more light, resulting in brighter and less noisy images. This makes them well-suited for indoor and night photography. BSI-CMOS sensors deliver a higher SNR and reduced cross-talk.


    Here is a sensor size comparison chart where you can see how Sony Alpha 7S III's Full Frame sensor compares with other types of sensors:

    Sensor size chart
    Sensor Dimensions Area Aspect Ratio Crop Factor
    Image cannot be displayedMedium Format44 x 33 mm1452 mm24:30.79x
    Image cannot be displayedFull Frame35.6 x 23.8 mm847.3 mm23:21x
    Image cannot be displayedAPS-H27 x 18 mm486 mm23:21.3x
    Image cannot be displayedAPS-C23.6 x 15.6 mm368.2 mm23:21.5x
    Image cannot be displayedAPS-C (Canon)22.3 x 14.9 mm332.3 mm23:21.6x
    Image cannot be displayedMicro Four Thirds17.4 x 13 mm226.2 mm24:32x
    Image cannot be displayed1-inch13.2 x 8.8 mm116.2 mm23:22.7x
    Image cannot be displayed1/1.7-inch7.44 x 5.58 mm41.5 mm24:34.7x
    Image cannot be displayed1/2.3-inch6.17 x 4.55 mm28.1 mm24:35.6x

    Photography Features

    Camera is equipped with BIONZ XR processor and can take pictures up to 4240 x 2832 resolution.


    Lens Mount

    Sony Alpha 7S III has Sony E lens mount. Due to Full Frame sensor its crop factor (also called lens multiplier) is 1x. This means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length.


    In-Body Image Stabilization

    The camera has a built-in 5-Axis Sensor Shift in-body image stabilization (IBIS) with 5.5 stops of compensation. This means that you are still getting vibration reduction when camera is paired with non-image stabilizied lenses. It also works with lenses with optical image stabilization and in combination can achieve even better compensation.

    Check out the cameras which are frequently compared to Sony Alpha 7S III.

    Connectivity, Battery and Storage

    Built-in Wi-Fi

    Camera has a built-in Wi-Fi (Wi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz) which allows to easily transfer photos and videos from the camera to other Wi-Fi-enabled devices, such as smartphones, tablets, printers, or computers. This eliminates the need for cables and allows for quick and convenient media sharing and social media integration. It gives you the ability to control your camera remotely using a smartphone or tablet. This is particularly useful for taking self-portraits, group shots, or capturing images in challenging conditions without having to touch the camera. Firmware updates can also be downloaded and installed wirelessly.
      Check out the cameras in our database that have built-in WiFi.


    Bluetooth

    Camera has a built-in Bluetooth (version 5) which lets you to connect the camera to a smartphone or a dedicated remote control device. This allows you to remotely trigger the camera, adjust settings and controls remotely through a paired mobile app. While Wi-Fi is generally faster for transferring larger files, Bluetooth can be used for small, selective transfers, it can provide real-time information about your camera's battery status, memory card capacity, and other key settings directly on your paired smartphone or smartwatch.
      Check out the cameras in our database that have built-in Bluetooth.


    NFC

    Sony Alpha 7S III has Near Field Communication (NFC) technology which simplifies the process of pairing it with other NFC-enabled devices like smartphones or tablets. It allows to quickly transfer photos and videos or remotely control the camera from compatible device. NFC can also be used for authentication and security purposes. It can verify your identity before accessing certain features or transferring sensitive data. It can be used with NFC-enabled accessories as well, such as lenses, flashes and GPS devices.


    USB Input and HDMI Output

    Sony Alpha 7S III has a USB 3.2 Gen 1x1 (5 GBit/sec) Type-C input for data transfer and battery charging. There is a Full Size HDMI connector for video signal output.


    Battery

    Sony Alpha 7S III comes with NP-FZ100 battery pack with battery life of 600 shots.


    External Storage Slots

    The camera has Dual CFexpress Type A / SD (UHS-II) card slots.

    Other Features

    Shutter

    Sony Alpha 7S III has Electronic shutter and Mechanical Focal Plane shutter. Shutter speed can go up to 1/8000 sec. Camera can shoot continuously up to 10.0 fps.


    Focusing

    Sony Alpha 7S III has Fast Hybrid AF (Phase-detection / Contrast-detection) system with 759 focusing points and from -6 to +20 EV detection range. Touch-to-Focus allows users to select a specific point on the screen where they want the camera to focus. This feature can be helpful for achieving precise focus in both photo and video recording. There is also face detection feature which automatically finds and focuses on faces and additional eye detection further locks the focus on one of the eyes and tracks it down during the motion.


    Exposure

    Camera's exposure metering ranges from -3 to +20 EV and you can set the exposure compensation within the ±5 EV range. You can also do exposure lock, exposure bracketing and manual exposure adjustment.


    Flash

    Sony Alpha 7S III has no built-in flash but an external flash may be connected via Intelligent Hot Shoe. The fastest flash synchronization speed is 1/250 sec. Flash compensation can be set from -3 to +3 EV with 1/3 or 1/2 EV step increments.

    Physical Parameters

    Sony Alpha 7S III has dimensions of 129 x 97 x 81 mm (5.08 x 3.82 x 3.19"). It weighs 699 g (1.54 lb / 24.66 oz) which is neither heavy nor lightweight.

    129 mm (5.08")

    97 mm (3.82")

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    97 mm (3.82")

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    81 mm (3.19")

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    Sony Alpha 7S III dimensions

    Sony Alpha 7S III for Different Types of Photography

    We give scores to the camera for different type of photography based on its features and specifications. Let us see how Sony Alpha 7S III is suitable for six different types of photography.


    Landscape Photography

    EXCELLENT
    87

    Sony Alpha 7S III gets a score of 87 and is EXCELLENT choice for Landscape photography.

    •   Large Sensor
    •   Touch Screen
    •   Screen Resolution - 1,229k dot
    •   No Built-in GPS
    •   Environmental Sealing

    Sports Photography

    GOOD
    82

    Sony Alpha 7S III gets a score of 82 and is GOOD choice for Sports photography.

    •   102,400 Highest Native ISO
    •   759 Focus Points
    •   Touch-to-Focus
    •   Face Detection
    •   Image Stabilization
    •   Touch Screen
    •   Screen Resolution - 1,229k dot
    •   High Resolution Viewfinder - 9,437k dot
    •   Max Continuous Shooting - 10.0 fps
    •   Short Battery Life - 600 shots
    •   2 Storage Slots
    •   Orientation Sensor

    Wildlife Photography

    GOOD
    82

    Sony Alpha 7S III gets a score of 82 and is GOOD choice for Wildlife photography.

    •   102,400 Highest Native ISO
    •   759 Focus Points
    •   Touch-to-Focus
    •   Animal Eye Detection
    •   Image Stabilization
    •   Touch Screen
    •   Screen Resolution - 1,229k dot
    •   High Resolution Viewfinder - 9,437k dot
    •   Max Continuous Shooting - 10.0 fps
    •   Environmental Sealing
    •   Short Battery Life - 600 shots
    •   2 Storage Slots
    •   Orientation Sensor

    Portrait Photography

    EXCELLENT
    89

    Sony Alpha 7S III gets a score of 89 and is EXCELLENT choice for Portrait photography.

    •   Large Sensor
    •   759 Focus Points
    •   Touch-to-Focus
    •   Face Detection
    •   Image Stabilization
    •   Touch Screen
    •   Screen Size - 3.0"
    •   Screen Resolution - 1,229k dot
    •   Max Flash Sync Speed - 1/250 sec
    •   Orientation Sensor

    Street Photography

    EXCELLENT
    90

    Sony Alpha 7S III gets a score of 90 and is EXCELLENT choice for Street photography.

    •   Large Sensor
    •   759 Focus Points
    •   Touch-to-Focus
    •   Image Stabilization
    •   Fully Articulated Screen
    •   Touch Screen
    •   Screen Resolution - 1,229k dot
    •   No Built-in GPS
    •   Environmental Sealing
    •   Weight - 699 g (1.54 lb / 24.66 oz)

    Travel Photography

    EXCELLENT
    86

    Sony Alpha 7S III gets a score of 86 and is EXCELLENT choice for Travel photography.

    •   Image Stabilization
    •   Fully Articulated Screen
    •   Touch Screen
    •   Screen Resolution - 1,229k dot
    •   High Video Resolution - 3840 x 2160
    •   No crop on 4K Videos
    •   High Video Recording Limit
    •   No Built-in GPS
    •   Environmental Sealing
    •   Weight - 699 g (1.54 lb / 24.66 oz)
    •   Short Battery Life - 600 shots

    Sony Alpha 7S III Evaluation

    We evaluate Sony Alpha 7S III and give score of 86 out of 100. We also give separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new camera is added to the database.


    OVERALL
    86

    Sensor

    GOOD
    80

    We give Sony Alpha 7S III a score of 80 for Sensor parameters.

    •   Large Sensor
    •   Low Resolution Sensor - 12.1 Megapixel
    •   80 Lowest Native ISO
    •   102,400 Highest Native ISO
    •   DxO Overall Score - 85

    Photo

    GOOD
    80

    We give Sony Alpha 7S III a score of 80 for Photo parameters.

    •   Image Stabilization
    •   High Max Shutter Speed (Mechanical or 1st Curtain) - 1/8000 sec
    •   Max Continuous Shooting - 10.0 fps
    •   Max Flash Sync Speed - 1/250 sec

    Video

    EXCELLENT
    89

    We give Sony Alpha 7S III a score of 89 for Video parameters.

    •   Image Stabilization
    •   High Video Resolution - 3840 x 2160
    •   10-bit 4:2:2 Color
    •   No crop on 4K Videos
    •   Webcam Functionality
    •   Unlimited Video Recording
    •   High Video Recording Limit

    Focusing

    EXCELLENT
    93

    We give Sony Alpha 7S III a score of 93 for Focusing parameters.

    •   -6 EV Min AF Detection
    •   759 Focus Points
    •   Touch-to-Focus
    •   Face Detection
    •   Live View Autofocus
    •   Animal Eye Detection

    Screen and Viewfinder

    EXCELLENT
    89

    We give Sony Alpha 7S III a score of 89 for Screen and Viewfinder parameters.

    •   Fully Articulated Screen
    •   Touch Screen
    •   Screen Size - 3.0"
    •   Screen Resolution - 1,229k dot
    •   Large Viewfinder - 0.64"
    •   High Resolution Viewfinder - 9,437k dot

    Connectivity

    EXCELLENT
    97

    We give Sony Alpha 7S III a score of 97 for Connectivity parameters.

    •   High USB Speed
    •   HDMI Output
    •   No Built-in GPS
    •   Built-In Wi-Fi
    •   Built-In Bluetooth

    Battery, Storage and Physical

    GOOD
    73

    We give Sony Alpha 7S III a score of 73 for Battery, Storage and Physical parameters.

    •   Environmental Sealing
    •   Weight - 699 g (1.54 lb / 24.66 oz)
    •   Short Battery Life - 600 shots
    •   2 Storage Slots


    For a full specification list please go to the specifications page:

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