Sony FX5 sensor performance and image quality analysis

The Sony FX5 utilizes a sensor with the same underlying architecture as the Sony FX3, but it is optimized for faster read speeds and improved bandwidth. Testing reveals that the FX5 achieves a rolling shutter speed of 5.7 milliseconds in 4K 16:9 full-frame mode, outperforming the Sony A7R VI. The camera supports internal RAW recording and open-gate recording, with the sensor resolution being exactly half that of the A7R VI. In low-light testing at ISO 12,800, the FX5 demonstrates superior performance compared to the FX3, recording 12.7 stops of dynamic range versus the FX3's 12.3 stops. The camera features a "Cine" menu system rather than the standard Alpha menu, prioritizing multi-function wheels and advanced autofocus settings, such as face-only tracking. Despite its hybrid-like form factor, the device is a dedicated video camera that lacks photo-taking capabilities. The sensor's dual-gain ISO performance is robust, with minimal dynamic range loss when increasing ISO from 800 to 12,800. The camera's screen is larger and brighter than previous models, retaining the flexible rotation mechanism found in the A7R VI.

Tech4K StaffVideo report

The Sony FX5 utilizes a sensor with the same underlying architecture as the Sony FX3, but it is optimized for faster read speeds and improved bandwidth. Testing reveals that the FX5 achieves a rolling shutter speed of 5.7 milliseconds in 4K 16:9 full-frame mode, outperforming the Sony A7R VI. The camera supports internal RAW recording and open-gate recording, with the sensor resolution being exactly half that of the A7R VI. In low-light testing at ISO 12,800, the FX5 demonstrates superior performance compared to the FX3, recording 12.7 stops of dynamic range versus the FX3's 12.3 stops. The camera features a "Cine" menu system rather than the standard Alpha menu, prioritizing multi-function wheels and advanced autofocus settings, such as face-only tracking. Despite its hybrid-like form factor, the device is a dedicated video camera that lacks photo-taking capabilities. The sensor's dual-gain ISO performance is robust, with minimal dynamic range loss when increasing ISO from 800 to 12,800. The camera's screen is larger and brighter than previous models, retaining the flexible rotation mechanism found in the A7R VI.

The Sony FX5 sensor is derived from the A7R VI, with a resolution exactly half that of the higher-megapixel camera. Rolling shutter performance is measured at 5.7 milliseconds in 4K 16:9 mode, which is faster than the A7R VI.

Low-light dynamic range at ISO 12,800 is slightly better on the FX5 than on the FX3. The camera features a dedicated Cine menu system that includes advanced autofocus settings like face-only tracking.

The device is designed exclusively for video production and does not support still photography. The FX5 maintains high dynamic range performance even when switching between base ISO and higher settings.

Chapter guide

IntroductionThe creator introduces the Sony FX5 and explains the purpose of the test.Sensor ArchitectureComparison of the sensor resolution and design between the FX5, FX3, and A7R VI.Rolling Shutter and Dynamic Range ResultsDetailed analysis of rolling shutter speeds and dynamic range across various recording modes.Color and Image QualityComparison of color science and image sharpness between the FX5, FX3, and A7R VI.Ergonomics and Menu SystemDiscussion of the Cine menu system, physical controls, and the screen design.

Worth noting

  • The video is sponsored by Storyblocks, which is disclosed by the creator.
  • The testing methodology relies on the Imatest software and Xyla-21 test chart, which may have inherent limitations in real-world scenarios.

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