Sensor Size: Full Frame vs APS-C
The Panasonic S5's full-frame sensor (24x36mm) captures significantly more light than the A6700's APS-C sensor (15.6x23.5mm). This translates to better low-light performance, shallower depth of field control, and superior dynamic range. While the A6700 offers higher pixel density at 26MP vs 24MP, the S5's larger pixels deliver cleaner images with less noise.
Video Capabilities and Performance
Both cameras excel in video, offering 4K recording with excellent image stabilization. The S5 provides 4K 60p recording internally, while the A6700 matches this with advanced autofocus tracking. The A6700's newer processor delivers faster burst shooting and improved subject detection, but the S5's full-frame advantage shines in cinematic applications with natural bokeh.
Build Quality and Ergonomics
The Sony A6700 wins on portability with its compact mirrorless design, making it ideal for travel and street photography. However, the Panasonic S5 offers superior build quality with weather sealing and a more substantial grip. The S5's larger body accommodates better button placement and a more comfortable shooting experience during extended sessions.
