Sony log colour grading with Pavtube and Premiere Pro

How to Color Grade Log Footage from Sony Cameras Using Pavtube and Premiere Pro can be reduced to two clear jobs: use Pavtube to prepare dependable media, then use Premiere Pro to turn Sony’s log signal into a controlled Rec.709 image. Keeping the original camera files intact reduces decoding surprises and gives the colourist accurate scopes for every decision.

Modern Sony cameras can record an unusually wide range of latitude, but log is a recording curve rather than a finished look. The right workflow depends on the camera model, its Picture Profile, the intended audience and the final delivery specification. The steps below cover S-Log2 and S-Log3 sources, including models using S-Log3.Cube, while keeping the creative work in Premiere Pro where precision tools remain available.

Record a consistent Sony log profile

Check the camera’s Picture Profile before the shoot because the correct transform starts with the curve and colour space actually recorded. S-Log2 on older Sony bodies needs a matching LUT, while S-Log3 on many recent cameras is paired with S-Gamut3.Cine or S-Gamut3.Cube. Some models also offer S-Log3.Cube with S-Gamut3.Cube. Record a short test clip for every profile you plan to use.

Use the highest practical data rate, normally 10-bit 4:2:2, and keep one profile for an entire sequence. Avoid Picture Profiles that bake in a strong Look or aggressive in-camera processing. Lock white balance to a fixed Kelvin value, record at the lowest native ISO recommended for that profile, and protect highlights with zebras or false colour. Log can recover shadow detail, but clipped highlights remain gone.

Australian mains are nominally 230 V and 50 Hz. Indoors, 25p footage shot near 1/50 second or 50p footage near 1/100 second is a sensible starting point for fluorescent and LED practicals, although the shutter must suit the motion. Test on location because inexpensive fixtures can behave differently. For wider coverage of the preparation stage, DigiSNS’s conversion and editing guide explains why consistent file handling matters before grading begins.

Prepare and convert the camera files

Confirm that the installer comes from the official Pavtube download page before opening it, and check that the release supports your version of Windows or macOS. Create separate folders for source cards, proxies and exports, but never overwrite the originals. Copy each card, confirm that every file opens, and retain the camera-generated media as the archival master.

Inspect the source codec, frame rate, resolution, audio channels and timecode before converting anything. Pavtube can turn camera formats into more manageable editing files, such as DNxHR or ProRes, when the original codec causes performance or compatibility issues. A 25fps sequence should remain 25fps, and a 50fps source should not be silently changed to another rate. Avoid unnecessary transcoding, since each conversion consumes storage and cannot restore information removed at capture.

Codec conversion does not normalise the log curve. The resulting file may still be S-Log3 even if its container and extension have changed. If the installed Pavtube version supports a trusted camera-matching LUT and a Rec.709 review copy is required, apply it only to that review copy. Keep a separate log master for the final grade, and use proxies for editing while rendering the approved grade from the full-resolution source.

Build a controlled Premiere Pro project

Import the prepared media into Premiere Pro, retain the camera cards or source folder, and organise clips by camera, scene or shooting day. Create the sequence at the source resolution and frame rate, using square pixels and the same audio configuration as the footage. For an Australian 25p production, the sequence should remain 25p unless the editor has been specifically asked to retime it for another market.

For standard-definition television or online delivery, configure a Rec.709 SDR workflow and match the project to a calibrated Rec.709 display. In a colour-managed project, choose the camera-matching workspace and the exact source transform for the Sony Picture Profile. In a traditional Lumetri workflow, the camera LUT belongs in the Input LUT slot. Do not apply a creative LUT at the same stage, because that makes technical corrections harder to identify.

Set the output transform to suit the agreed deliverable. A Rec.709 project should normally remain SDR unless the client has explicitly requested HDR and the display, mastering and distribution chain support it. Premiere’s Video and Audio scopes should be available before the first adjustment, with waveform and vectorscope views arranged so they remain visible while the program monitor is used for critical viewing.

Apply the technical log transformation

Apply the exact Sony camera-matching LUT to every log clip in the sequence. A LUT designed for S-Log2 cannot transform S-Log3 correctly, and a LUT for standard S-Gamut3.Cine may produce an inaccurate result with S-Gamut3.Cube footage. Test the transform on skin, neutral surfaces and saturated colours because camera-matching LUTs often reduce saturation or shift the overall appearance as they map the log range into Rec.709.

Once the technical transform is active, use Lumetri Basic Correction for temporary exposure and white-balance refinements. Avoid aggressive automatic corrections, which can change colour unpredictably between clips. Recover shadow detail with restrained curves rather than lifting the black point aggressively; noise hidden in the log signal can become obvious when the image is normalised. Keep contrast changes modest until the exposure and white balance are consistent across the scene.

Use the waveform to identify clipping and check that highlights and blacks occupy a sensible range. The vectorscope helps reveal unexpected hue shifts, over-saturated colours or inconsistent skin tones, but its skin-tone line is a reference rather than a mandatory target. Legal-range video traditionally places black near 16 IRE and white near 235 IRE, while full-range workflows use different limits. Follow the selected Rec.709 specification instead of forcing every clip into the same range by eye.

Shape the creative look

Build the intended appearance after the footage is technically consistent. Adjust contrast, highlight roll-off, colour balance and saturation with separate corrections, then use masks, colour wheels, curves and hue controls to refine specific parts of the frame. A restrained grade often looks more convincing than separate saturation and contrast boosts. Apply the final creative adjustments as separate layers so they can be revised without rebuilding the technical conversion.

Location conditions across Australia make careful balance especially useful. Sydney shoots can move from hard harbour sunlight to blue-hour practicals, while Melbourne may change from flat overcast conditions to low winter sun within a day. Brisbane’s stronger summer light creates deeper contrast, and the Southern Hemisphere seasons produce shorter winter production days than many overseas crews expect. These shifts are easier to manage when white balance and exposure changes are controlled shot by shot.

When several rushes files, camera angles and short cutdowns need preparation before grading, the broader Pavtube Ultimate package can support batch conversion and basic assembly. Keep the master grade in Premiere Pro and export clean review files from the same source configuration. This preserves room to revise the look if a stakeholder requests a brighter broadcast version or a darker online version.

Quality-check and deliver the finished grade

Watch the finished sequence on a calibrated display with the scopes open. Check every camera change for exposure, colour and sharpness differences, then inspect suspect frames at full magnification for banding, noise, compression artefacts, clipping and flicker. Review both the beginning and end of each clip, including transitions and moments when the original camera settings changed. A clean program monitor alone can conceal small luminance errors that become obvious in the waveform.

Deliver the master in a high-quality intermediate format, such as ProRes 422 HQ, and create an H.264 or HEVC version for review or online distribution. Many Australian television and commercial briefs still specify 1080i/25p or 1080p/25p Rec.709 SDR, while HDR requirements are usually negotiated for particular platforms. Confirm the resolution, frame rate, colour space, audio layout, loudness target and file naming rules in the delivery specification before export.

Preserve the original Sony cards, the camera logs, the converted media, the Premiere project, any third-party LUTs and written notes about the grade. Export still frames that show the approved skin tone, highlight and shadow treatment. Maintain at least two additional copies on separate media, including one away from the production location, because summer heat and long transport days can make drive failures more likely. That combination of untouched sources, repeatable processing and documented settings provides a dependable record long after the production wraps.