Panasonic's all-rounder L-Mount full-frame — 24.2MP with IBIS, Dual I.S. 2, and pro-grade video specs.
The Panasonic Lumix DC-S1 was released in 2019 as the 24.2MP video-hybrid companion to the S1R in the initial L-mount launch, featuring 5-axis IBIS, 4K/60fps in APS-C crop mode, and 4K/30fps full-frame oversampled. V-Log is available as a paid upgrade (unlike the S1H where it is pre-installed). DMW-BLJ31 battery. At approximately 1,021g with battery and card.
24.2MP full-frame CMOS sensor. 5-axis IBIS 5.5 stops (6 stops Dual I.S. with compatible OIS lenses). 4K/60fps (APS-C crop mode); 4K/30fps full-frame oversampled; 10-bit 4:2:2 internal. V-Log available via paid upgrade. DMW-BLJ31 battery. Body weight approximately 1,021g with battery and card. Dual card slots (XQD/CFexpress B + SD UHS-II).
The S1 and S1R share the same body and most specifications — the primary differences are sensor resolution (24MP S1 vs 47MP S1R), video focus (S1 stronger for video via DPAF-equivalent and better video modes), and high-res mode output (96MP S1 vs 187MP S1R). The V-Log paid upgrade requirement was a common user complaint versus the S1H where V-Log is standard.
On the used market the Panasonic S1 is available at mid-range professional L-mount pricing. Condition checks: IBIS operation, DMW-BLJ31 battery health, dual card slot contacts. V-Log upgrade is separate cost — confirm whether the specific unit has V-Log unlocked. Compatible with all L-mount lenses.