Sony's entry APS-C mirrorless with real-time eye AF — 24.2MP with A6400-class AF.
The Sony A6100 launched in 2019 as an affordable APS-C mirrorless with real-time eye AF and tracking — the same advanced AF from the A6400 at a lower price. It bridged the gap between the A6000 and A6400.
The 24.2MP APS-C sensor with 425-point hybrid AF provides real-time eye AF for humans and animals — a major upgrade over the A6000. 11fps burst. 4K 30p video. The A6100 brought A6400's AF to budget pricing.
Compact body at 396g. 3-inch tilting touchscreen. Built-in EVF. WiFi, NFC, and Bluetooth. Sony E-mount. Single SD card slot. Micro-USB. No IBIS — lens OSS provides stabilisation where available.
Available used at budget to mid-range prices. The A6400 adds better build and more features. The A6100 provides the most important feature — real-time eye AF — at a lower price. For budget Sony APS-C shooters wanting modern AF.