Sony Cinema files in post-production: technical guide

Table of Contents

Introduction: The Sony Cinema Line Philosophy

Sony has successfully harmonized its cinema cameras (VENICE) and compact cameras (FX Series). The philosophy relies on Full-Frame or Super35 high-sensitivity sensors (Dual Base ISO), massive exposure latitude, and unified color science designed to integrate easily into modern pipelines (ACES, Resolve RCM).

The Sony Cinema Line Cameras

Sony Recording Formats

Sony Cinema Pipeline

• Shooting (VENICE/FX6)
• Ingest (AXS/CFexpress)
• Editing (X-OCN/Proxy)
• Color (ACES/RCM)
• Grading (16-bit)
• Mastering (DCP/HDR)

File Architecture

X-OCN files are encapsulated in MXF. They retain all camera metadata (EI, WB, Tint) which are non-destructive. Sony 'Debayering' is highly GPU-optimized (CUDA/Metal), making native editing possible on powerful workstations.

Media Preparation

• 1Media: AXS cards (VENICE), CFexpress Type A/B (FX6/FX3/BURANO), XQD (FX9).
• 2Security: Copy with Checksum (xxHash64) mandatory. AXS cards require a dedicated fast reader (Thunderbolt 3).
• 3Structure: Keep the full XDROOT directory structure to guarantee linking with clip metadata (XML).

Editing Sony Cinema Files

RAW & Image Parameter Management

In X-OCN, you have access to RAW parameters in DaVinci Resolve:

Dual Base ISO Sony sensors have two analog circuits (e.g., ISO 800 / ISO 3200 for VENICE). Choosing the right base on set is crucial for signal-to-noise ratio.

Exposure Index (EI) In Cine EI mode, changing ISO does not affect the RAW file (it's metadata for monitoring). You can adjust exposure in post without loss.

White Balance Freely adjustable in post-production on X-OCN/RAW files.

Sony Color Science

Standardization around S-Log3 makes it easy to match an FX3 and a VENICE.

S-Gamut3.Cine vs S-Gamut3 S-Gamut3.Cine is optimized for the P3 gamut (Cinema) and is easier to grade. S-Gamut3 is wider (close to BT.2020) but more complex to handle.

S-Log3 Standard logarithmic curve. Offers about 15 stops of dynamic range. Be careful not to underexpose (noise in shadows).

ACES The Sony VENICE IDT is excellent. ACEScct workflow is highly recommended for multi-camera productions.

Grading Stage: Specifics

Highlights

S-Log3 has a very smooth roll-off. In grading, map the white point correctly to keep this softness, especially on skin tones.

Noise Management

S-Log3 lifts shadows significantly. If you underexposed, noise may appear. Use moderate 'Spatial NR'.

Deliverables & Mastering

The 16-bit quality of X-OCN is ideal for HDR (High Dynamic Range) Dolby Vision or HDR10 masters, as well as 4K Cinema DCPs.

Sony Technical FAQ

ForCut Studio Approach

Our suites are calibrated for S-Gamut3.Cine precision. We handle secure ingest of your AXS and CFexpress cards, and offer reference HDR monitoring to reveal the full dynamic range of the VENICE 2.

Conclusion

"The Sony Cinema Line offers incredible flexibility. From 'run-and-gun' shooting on FX6 to feature films on VENICE, mastering the X-OCN and S-Log3 workflow guarantees an exceptionally rich final image."