In this video Will tests the Sony A7Siii Autofocus system as well as the eye tracking features using various lenses like the 17-28mm f2.8 tamron, the sony 135 f1.8, and the sigma art 24-70 f2.8. This camera has the same auto focus system as the Sony FX3.

The best settings to film with on the Sony A7s iii as well as the best SD cards to use, best card reader to use, and why not to use the higher end CF Express Type A cards.