パナソニック「S1RII」発表！知っておくべき主要新機能

Panasonic LUMIX S1RII released on February 25, the major media and organizations have got the relevant machine for review in advance, the following is a summary of the results of the review, listing the key information that needs attention.

The Panasonic LUMIX DC-S1RII comes with a new back-illuminated sensor (IMX366) that is not stacked and reads at speeds close to that of the 24-megapixel model (IMX410), which means that the bottom of this one isn’t really that fast.

Equipped with Dual Conversion Gain (two stops of native ISO), users can manually select two reading modes to suit the needs of different shooting scenarios. The first native ISO comes to 80 in standard color mode.

In terms of focusing performance, the camera is equipped with second-generation image-plane phase-difference AF, as well as significantly improved subject recognition and tracking algorithms, which can recognize a wide range of subjects, including people, animals, vehicles, and more. However, there is still room for improvement in its focusing system, with some scenes failing to focus, and its final performance will need to be further optimized with subsequent firmware updates. Of course there is no mention of an AI chip anywhere, naturally.

The new “Cinelike A2” color mode is suitable for both photo and video shooting, and sits between the “D2” and “V2” profiles, with a softer style to meet the The new “Cinelike A2” color mode is for photo and video shooting, and sits between the “D2” and “V2” profiles, with a softer style to meet specific color style needs. The camera is equipped with a real-time LUT function that can load up to 39 LUTs, and supports combinations of two LUTs with different intensities, making it easy for users to quickly adjust color styles while shooting. For the first time, there’s also a Folscolor option, which helps users get a clearer picture of the exposure in both photo and video modes, and determine which parts of the image may be overexposed or underexposed, for improved shooting accuracy. There’s not much new in this section.

It supports a wide range of video specifications, such as offering resolutions close to UHD 8K, DCI 8K, and an 8.1K resolution option with a 1.89:1 ratio, and features video shooting assistance features common to Panasonic products, such as shutter angle, waveform monitor, and more, as well as support for 4-channel audio and 32-bit Float audio recording via an XLR2 accessory, and adapting anamorphic lenses.

The camera supports Open Gate shooting, capable of shooting at full resolution from the 3:2 area of the sensor and outputting 6.4K video (higher resolution Open Gate will be supported in a future firmware update), and supports ProRes 422 or ProRes RAW format recording to a CFexpress Type B card or external SSD.

When shooting video, it has a more pronounced rolling shutter phenomenon (big jello) than the stacked sensor models, which is better than the Sony ones but still not as good as the Canon EOS R5 II and Nikon Z 8.

ボディ設計と操作性において、Panasonic LUMIX DC-S1RM2はより小型軽量なS5IIシリーズをベースとしており、初期のS1シリーズよりコンパクトで、内蔵ファンと冷却排気口を備えることで長時間撮影にある程度の安定性を保証。GHシリーズには及ばないものの、比較的長時間の記録も可能。グリップは深い形状に改良され、ボタン配置も調整。前面のFnボタンを減らし、新たにRECボタンや静止画/動画/S&Q専用スイッチ、ロック機能付きモードダイヤルを搭載。ユーザーの使用習慣に合わせたカスタマイズが容易。

背面モニターはSony α7R Vと同様の可動機構を採用し、チルトと可変角度機能を組み合わせることで、マイク・ヘッドホン・HDMI端子との干渉を効果的に回避。あらゆる撮影角度での画像確認が容易。

バッテリーはS5IIと同じ15.8WhのDMW-BLK22を採用（平均的な駆動時間）。新バッテリーグリップDMW-BG2に対応し、ホットスワップ可能。グリップと本体のバッテリーを併用することで、高負荷撮影時の耐久性を向上。

総評としてLUMIX DC-S1RM2は、画素数・動画機能・ボディ設計などで強力な競争力を示し、同クラス製品の中で価格面でも優位性あり（国内予想価格20,998円前後、19,998円なら良心価格、22,998円超えるとコスパは平均的）。ただし、フォーカス性能の安定性や動画撮影時のローリングシャッター制御などは今後の改善が待たれる。