Camera Raw

In cinema and high-end digital stills, raw means the camera stores minimally processed photosite values (and metadata), usually still arranged in a Bayer (or similar) mosaic, not a display-ready RGB frame. Debayering, color matrixing, white balance, and tone curve are deferred to software that can be improved later or matched across a production. What you open in a viewer is always a render: the app demosaics and applies a default look so you can see something. That preview is not "the raw"; it is one possible interpretation. Change the demosaic or the input transform and the same file can yield a different image without re-rolling the set.

Early digital video baked a lot in-camera: white balance, gamma, detail, sometimes even a hard Rec.709 look. That was fine for news and run-and-gun; it was hostile to cinema DI, where film negative had offered latitude and delay. You committed color in the grade, not at the head of the magazine. Raw (and raw-like cinema formats from RED, ARRI, Blackmagic, Sony, and others) answers: keep the sensor's evidence. Push ISO as a metadata gain where the format allows, refine debayer algorithms years later, rebuild a show LUT chain without regenerating dailies from a crushed RGB master. Compression entered because uncompressed raw is enormous; the engineering fight is visually transparent compression versus bit rate on set and in the archive. Cinema "raw" is a family, not one file type: vendor containers, debayer methods, and color science differ. The shared idea is late binding of image formation.

On set: record raw (or raw plus proxy). Exposure still matters; raw does not forgive blown photosites. Tools: false color and waveform on a debayered monitoring path, histogram of raw levels when the camera provides it, zebras that know the format. DIT and dailies: official input transform (camera color science to working space), consistent exposure mapping, proxies for editorial, checksums and backups. This is where "the show looks like this" gets locked for the cutting room without destroying the archive master. Grade: conform raw to the timeline, debayer at quality settings that match delivery, work scene-referred (often toward ACES or camera linear), deliver display-referred masters. VFX: prefer raw or high-quality scene-referred EXR over display-referred ProRes when the shot must re-light or key; baked contrast is expensive to undo.

Raw stores the photosite mosaic plus metadata; log stores image-formed color with a log curve already applied. Raw defers debayer; log has it done. In raw, white balance and matrix are often reversible metadata; in log they are applied or partly applied. Raw is large even compressed; log is smaller and timeline-friendly. Raw is best at maximum deferral, VFX, and archive; log is best at on-set monitoring simplicity and lighter media. Many cameras offer both: raw for the master, log ProRes for the cart and editorial. Neither replaces sensor dynamic range; both are strategies for what to freeze when.

On many raw systems ISO is a metadata gain and noise trade, not a film stock. Dual native ISO and dual-gain architectures change which amplifier path you use; highlights and noise floors are not a single dial. "We'll fix it in post" still fails if photosites are clipped or buried in read noise. Raw is flexible, not magical.

Treating a vendor's default preview LUT as "neutral." Mixing ISO-as-metadata with dual-gain or baked highlight modes without reading the white paper. Debayering to Rec.709 early, then grading "as raw." Assuming all raw is equal across brands for color matching; matrix and spectral sensitivities differ, and that is a color-management problem, not a slider problem. Skipping display calibration because "we're in raw": the client still watches light on a panel, and EOTF and white point still rule the room.

Raw and log live in the signal and pipeline half of the craft. Probes, LUTs, and PQ still live in the display half. A reference monitor showing a raw-derived image is only trustworthy if its calibration matches the monitoring intent (Rec.709 dailies vs HDR grade). Upstream latitude is wasted if the room lies.