It’s been a long wait, but the Sony a7S III is finally here and it is everything we wished it to be, perhaps more. It takes the S-Series to a whole new level! Based on specifications, it is better than its predecessor in every single way, so if your goal is to create high-end video, the A7S III is worth the upgrade.

Sensor

A revised 12.1MP Exmor R BSI CMOS sensor and updated BIONZ XR image processor offer faster performance, improved noise reduction, and a wider dynamic range, along with UHD 4K 120p video recording and internal 10-bit 4:2:2 sampling as discussed below.

Like its predecessor, the a7S III has a full-frame sensor that allows the camera to have a wide sensitivity range for good low-light capabilities. However, with a back-illuminated design, the a7S III boasts even better dynamic range, readout speeds, and low-light performance.

Sony a7S III mirrorless digital camera

Video resolution

The Sony Alpha a7S III will inspire film like no other. Video is its primary application and even though the a7S II also shoots 4K, the a7S III upgrades to 10bit 4:2:2 colour depth and can hit 120p (compared to 8-bit 4:2:0 and 30p on the a7S II). Raw video output is a first for Sony with the a7S III at 4K (16-bit) up to 60p via the full-size HMDI port. The a7S III also does away with recording time limits and incorporates HLG for direct HDR production as well as S-Log2/S-Log3 gamma profiles for advanced HDR production with editing.

Autofocus

The updated sensor design brings improved AF performance via 759 phase-detection points, which offer intelligent subject tracking and Real-time Eye AF to ensure critical focus on moving subjects in all recording modes. The a7s II only had contrast-detection and 169 points resulting in slower performance, whereas the a7S III is better suited to shooting fast-moving subjects.

Sensitivity

Thanks to the back-illuminated sensor and BIONZ XR processor, the A7S III’s high ISO 80-102400 (extended to ISO 40-409600) makes a winning combination for shooting professional productions. It also boasts fast 10 fps continuous shooting for up to 1000 consecutive raw frames. 

In-Body Stabilisation

The 5-axis SteadyShot INSIDE sensor-shift image stabilisation minimises the appearance of camera shake by up to 5.5 stops, which is a one-stop improvement on the a7S II.

Viewfinder

Changes to the physical design include a 3-inch rear LCD touchscreen with a side-open articulating design and a major resolution boost from a 2.30-dot OLED electronic viewfinder (EVF) on the a7S II to a 9.44m-dot OLED EVF, making the new Sony A7S II useful for producing smooth transitions between focus areas.

Memory card slots

Dual memory card slots both support working with CFexpress Type A or SD UHS-II memory cards for flexible and high-speed file storage, whereas the a7S II only has one SD card slot.

Sony a7S III mirrorless digital camera

Conclusion

With extreme full-frame movie performance including high sensitivity, 15+ stop wide dynamic range, 4K120p, fast and responsive autofocusing, extra-strong image stabilisation and 4K60p All-I movie recording time over an hour, the Sony a7S III once again raises the bar for movie makers. It also has a CFexpress Type A memory card slot while retaining full SD compatibility. 

Create as you have never before with the Sony A7S III – complete game changer! Why wait? The Sony A7S III is available for preorder at Outdoorphoto. For information on price and availability, view the a7S III on our online store.