Updated

Updated · CineD · Jul 22

Sony FX5 Review Spotlights 16.6MP Sensor and 5K Open-Gate as 16-bit RAW Debuts Internally

Updated

Updated · CineD · Jul 22

Sony FX5 Review Spotlights 16.6MP Sensor and 5K Open-Gate as 16-bit RAW Debuts Internally

Q: Why is Sony promising key features like 4Kp240 recording in a firmware update scheduled for August 2027?

Sony is likely doing this to ship the FX5 sooner while signaling that the hardware is capable of more than the launch firmware enables. Nothing in the provided material shows Sony explicitly explaining the August 2027 timing. But the pattern is familiar in pro camera launches: companies release a camera once the core imaging pipeline is stable, then add demanding features later through firmware after more testing, thermal tuning, codec optimization, and workflow validation. That is especially plausible here because 4Kp240 in X-OCN is a very heavy feature, requiring sustained sensor readout, processing bandwidth, media performance, heat management, and post-production reliability. The FX5 already launches with a large jump in capability for its class, including a new stacked 16.6MP sensor, the Bionz XR2 processor, internal 16-bit X-OCN RAW, Open Gate, triple base ISO, and high-frame-rate modes up to 4.5Kp120 and 5Kp60. Adding 4Kp240 later suggests Sony believes the hardware headroom exists, but the feature is not yet ready for release-level stability. There is also a commercial reason. Promising future firmware support reassures buyers that the camera will improve over time and helps Sony stay competitive against rivals without delaying the product’s market entry. So the most evidence-based answer is that Sony appears to be balancing time-to-market with a staged rollout of advanced features, rather than withholding them for no stated reason.

Q: Why did Sony's new cinema camera omit internal ND filters, a feature many filmmakers consider essential?

Sony appears to have omitted internal ND filters as a design trade-off, not because the feature is unimportant. The FX5 was built to keep the compact FX3-style body while adding higher-end cinema features such as a new stacked full-frame sensor, internal 16-bit X-OCN RAW, open-gate 5K, triple base ISO, and advanced monitoring tools. In a body this small and at a $4,898 starting price, internal ND likely lost out to size, heat, power, and cost constraints. The available reporting does not cite Sony giving a detailed technical explanation. But the product positioning is clear: the FX5 is meant to sit between the FX3 and FX6, borrowing the small form factor of the former rather than the larger, more production-oriented body design of the latter, which is where Sony’s internal electronic ND system has traditionally lived. That makes the omission easier to read as a segmentation decision as well. Sony kept the FX5 focused on core cinema imaging and workflow upgrades while leaving some premium convenience features to higher-tier models. The same launch materials also note other deliberate omissions, including no photo mode and no 8K, reinforcing that Sony chose a tightly defined feature set rather than trying to include everything. For filmmakers, the practical result is that external ND solutions will still be necessary, even though many shooters consider built-in ND one of the most useful cinema-camera features.

3 articles · Updated · CineD · Jul 22

Sony’s new FX5 impressed in a first-look test with strong low-light performance, 5K 3:2 open-gate capture and triple base ISO at 800, 4000 and 12800.
Internal 16-bit X-OCN RAW is a headline upgrade, with one minute of 5K/24p footage using 5.54GB in LT, 4.13GB in C1 and 3.34GB in C2.
Several marquee modes are not available at launch, including full-frame 5K open-gate X-OCN, 4K 120fps XAVC and 4K 240fps crop recording, all tied to later firmware.
Editing support remains limited on the preproduction unit: Sony RAW Viewer was rough in testing, while DaVinci Resolve handled files better and Adobe Premiere still required conversion.
Priced between the FX3A and FX6, the FX5 adds a detachable €750 EVF, CineAlta-style menus and anamorphic tools, positioning it as Sony’s new compact cinema step-up.