I rented the Panasonic S5 II for a project that needed both solid stills and genuinely usable video from the same body, on the same day, without swapping gear. Panasonic doesn't get talked about as often as Sony or Canon in photographer circles, and after two weeks I think that's more about brand momentum than the camera itself.
It's a full-frame mirrorless body built around a 24.2-megapixel sensor, launched at $1,999 body-only, positioned as Panasonic's first full-frame body with phase-detect autofocus.
Panasonic's older bodies relied on contrast-detection autofocus, which had a real reputation for hunting, especially in video. The S5 II switched to phase-detection, and the difference is immediately noticeable. Tracking a subject walking toward the camera during a test shoot, focus held confidently without the visible pulsing I remembered from older Panasonic bodies I'd used years back. This single change addresses what was genuinely the biggest complaint about the brand for years.
The 24-megapixel sensor performed well in a dim restaurant test shoot, holding detail in shadows up to around ISO 6400 before noise became distracting. That's roughly in line with what I get from my A7 IV, which surprised me given Panasonic's reputation as more of a video-first brand than a stills-first one.
The S5 II includes a small internal fan for active cooling during video recording, which let me record 4K footage for over 45 minutes continuously without a thermal shutdown, a real limitation I've hit on other hybrid bodies during long interview setups. For anyone doing longer-form video alongside stills work, this single feature could be the deciding factor over a spec-sheet comparison with competitors that lack it.
The grip is deep and comfortable, but the body is slightly heavier than comparable Sony bodies, which I noticed on a long handheld session. It's not a complaint exactly, just a different set of tradeoffs, the extra weight actually helped stability during handheld video panning, where a lighter body tends to pick up more shake.
A dedicated physical switch on top of the camera flips between photo and video modes, each with entirely separate settings memory. I could leave video settings dialed in for an interview setup, flip to photo mode for stills of the same subject, then flip back without re-entering anything. This solved a genuine annoyance I've had with hybrid shooting on other systems, where switching modes means re-checking half a dozen settings each time.
Panasonic's L-mount lens lineup, shared with Leica and Sigma, is smaller than Sony's E-mount ecosystem. I had to plan the rental around specific available lenses rather than assuming I'd find exactly what I wanted, which wouldn't be a concern with Sony's much larger third-party lens selection. This is improving as more L-mount alliance lenses ship, but it's still a real consideration today.
Between stills and video testing across a full day, I got through about 400 stills-equivalent shots plus roughly an hour of 4K footage on a single battery, respectable given how much of that time the active cooling fan was running.
Panasonic has a reputation, deserved in my experience, for producing warmer, more film-like skin tones straight out of camera than Sony bodies tend to. Shooting the same subject under the same lighting with the S5 II and my A7 IV back to back, the Panasonic file needed noticeably less warmth added in editing to look natural. This isn't a massive difference, and both are easily correctable, but for anyone who prefers to spend less time in the editing chair per image, it's a real, measurable advantage worth factoring into a buying decision.
The S5 II includes one SD card slot and one CFexpress Type B slot, a mixed pairing rather than matched dual SD slots. This lets you record high-bitrate video to the faster CFexpress card while backing up stills to a cheaper SD card simultaneously, a sensible setup for hybrid work, though it does mean budgeting for two different card types rather than buying a matched pair, which adds a small but real cost most reviews don't mention upfront.
Against Sony's A7 IV, autofocus reliability now sits close enough that I wouldn't pick one purely on that basis anymore, something that wasn't true of Panasonic's older bodies. Against Canon's R6 Mark II, the S5 II's video-focused feature set, the active cooling especially, pulls ahead for anyone prioritizing longer recording sessions, while Canon's subject detection autofocus still has a slight edge for stills-first shooters chasing fast-moving subjects.
If you split your work between stills and video roughly evenly, and especially if you shoot longer video sessions where thermal limits matter, this camera deserves more consideration than it usually gets in comparison articles that default straight to Sony or Canon. It's not the camera I'd hand someone chasing the fastest autofocus available for sports, but for hybrid content work it's genuinely underrated.