Pro-Level Hybrids with a Flaw You Need to Know
Panasonic has made a bold move in the full-frame mirrorless camera market with the launch of the Panasonic LUMIX S1 II and its companion model, the S1 IIE.
These cameras target hybrid creators who demand equally powerful tools for both photography and video production. With new sensor designs, class-leading stabilization, and extensive pro-level video features, the S1 II and IIE are highly capable.
However, one critical flaw in the autofocus system has left some reviewers cautious about calling these models perfect.
Hybrid-First Design for Today’s Creators
The LUMIX S1 II is built with a new 24.1MP partially-stacked CMOS sensor that dramatically increases readout speed. This allows for breakthrough continuous shooting speeds of up to 70 frames per second with the electronic shutter while maintaining full autofocus—an industry-leading number for full-frame hybrids. The camera also delivers excellent video specs, including 6K30p, 5.8K60p, and 4K120p recording. Open Gate formats and V-Log with Dynamic Range Boost extend the dynamic range to an impressive 15 stops, giving filmmakers more flexibility in post-production.
Panasonic has always leaned into its video-first strengths, and the S1 II is no exception. Features like internal and external ProRes RAW recording, high-resolution viewfinders, dual-native ISO, hybrid zoom modes, and advanced LUT preview support position the S1 II as one of the most complete hybrid systems available today.
The “Essentials” S1 IIE Offers a Lighter Option
The S1 IIE offers many of the same core features but with a more streamlined sensor: a 24.2MP BSI CMOS chip similar to that used in the LUMIX S5 II. It supports 30 fps burst rates, 6K Open Gate video, and an impressive 14+ stops of dynamic range in V-Log. While it lacks the ultra-fast readout of the stacked sensor in the S1 II, it retains the robust stabilization, autofocus system, and body ergonomics. Panasonic markets the IIE as a refined tool for creatives who don’t need every cutting-edge feature but still want a pro-level imaging device.
Autofocus: A Tale of Two Systems
One of the most talked-about updates is the Phase Hybrid Autofocus system—borrowed and improved from the S5 II. Face and eye tracking is now reliable enough to be used in continuous shooting and video, a huge improvement over Panasonic’s older contrast-based systems.
However, the spot tracking autofocus system (touch-to-track) has been widely criticized. According to reviews, it often misidentifies the subject, loses focus when either the subject or camera moves, or simply deactivates itself. This limitation has been labeled a “fatal flaw” for users who rely on subject-tracking in dynamic environments, particularly for run-and-gun filmmaking, event coverage, or fast-moving photo sessions.
New Lens: LUMIX S 24-60mm f/2.8
To pair with the new bodies, Panasonic introduced a versatile 24-60mm f/2.8 lens. It offers a constant aperture across its zoom range, compact design (just 544g), close focusing at 19cm, and an impressive 0.3x magnification. Autofocus is handled by a new Dual Phase Linear Motor and optical encoder system, built for both speed and silence—ideal for video shooters trying to minimize operational noise. The customizable control ring adds flexibility for power users.
Workflow, Lenses, and Ecosystem
Panasonic continues to lean into the strength of the L-Mount Alliance with Leica and Sigma. Between the three brands, there are now more native L-Mount lenses available than for Canon RF—a surprising and compelling argument for adoption.
In terms of workflow, both the S1 II and S1 IIE support direct USB SSD recording, cloud-based collaboration via Frame.io, tethered shooting with Capture One, and streamlined mobile integration through the LUMIX Lab and LUMIX Flow apps. Whether you’re a YouTuber, wedding shooter, or commercial filmmaker, Panasonic offers a complete system with strong third-party support and serious tools.
Final Verdict: Best-in-Class with One Caveat
The Panasonic LUMIX S1 II might be one of the best hybrid cameras ever released—on paper. Its combination of ultra-fast burst shooting, cinema-ready video formats, world-class stabilization, and deep customization make it a top-tier option for demanding creators. The S1 IIE offers a more affordable path with similar core features, making it ideal for budget-conscious professionals.
But no matter how capable these cameras are, the unreliable spot tracking AF could become a dealbreaker for some. If Panasonic addresses this issue through firmware, the S1 II has the potential to stand toe-to-toe with Sony and Canon’s flagship hybrids in both performance and value.
For full technical details and Panasonic’s official announcement, read the official Panasonic press release.
Where to Buy the Panasonic LUMIX S1 II
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People Also Ask
Q: What is the difference between the Panasonic LUMIX S1 II and S1 IIE?
A: The S1 II features a faster stacked sensor and can shoot up to 70 fps, while the S1 IIE uses a BSI sensor and maxes out at 30 fps. The S1 II also offers slightly better dynamic range and higher-end video specs.
Q: Is the Panasonic LUMIX S1 II good for video?
A: Yes. The S1 II offers 6K and 5.8K video, 15 stops of dynamic range in V-Log, internal and external ProRes RAW, and Open Gate support, making it a top-tier hybrid video camera.
Q: What lens is recommended for the Panasonic LUMIX S1 II?
A: Panasonic recommends the new LUMIX S 24-60mm f/2.8, a compact, lightweight zoom lens with a constant aperture, silent autofocus, and hybrid zoom compatibility.
Q: Does the LUMIX S1 II have autofocus issues?
A: Yes, while face and eye detection have improved, spot tracking (touch-to-track) autofocus is widely reported as unreliable and inconsistent.