Let's take a look at 5 key differences between the  Sony A7S III and the Sony A7 IV


1. Sensor

The Sony A7S III sports a 12.1 megapixel sensor.  The A7 IV boasts the higher number here with 33.3 megapixels.

2. Video

The A7S III can shoot up to 4k 120p and 1080p 240 FPS. The a7IV can shoot up to 4k 30p & 1080p 120 FPS. 4k 60p is possible in Super 35 / APS-C Mode. 

3. ISO Range

The A7S III has a normal ISO range for movies of 80-102400 & 80-409600 expanded.    The A7 IV has a normal ISO range for movies of 100-51200 & 100-102400 expanded.

4. EVF & Display

The A7S III features a 9.44M dot EVF and a 1.44M dot touch LCD display.   The A7S III features a 3.68M dot EVF and a 1.04M dot touch LCD display.

5. Autofocus

The A7S III features Eye AF for Humans & Animals for stills but only Humans for movies. The A7 IV features Eye AF for Humans, Animals & Birds for both stills and movies.

Learn More

Read our complete detailed A7SIII vs A7IV comparison on Alpha Shooters   A growing community and resource for Sony Alpha Shooters!