Anyone who has worked a daytime match in a partly covered stadium knows the moment. The sun drops behind the main stand, a hard shadow line crosses the pitch, and suddenly no single camera setting looks right. Expose for the sunlit grass and the far side turns into a dim, muddy band. Expose for the shade and the bright half blows out. This piece is part of our guide to shadows in live sports, and it focuses on the exposure decision itself: why mixed lighting forces a compromise, and what that compromise costs on screen.
Dynamic range of the scene vs the camera vs the signal
Dynamic range is the span between the darkest and brightest parts of a picture that can still hold detail. Three different dynamic ranges matter here, and they are not the same size.
- The scene. Direct sun on bright grass and a white shirt next to a deep stand shadow can produce a brightness ratio of many stops. On a clear day the gap between the sunlit and shaded halves of a pitch can exceed what any single exposure comfortably holds.
- The camera. A broadcast camera captures a wide range, but a finite one. Its sensor and processing decide where highlights clip and where shadows fall into noise.
- The signal. The standard-dynamic-range signal most viewers still receive typically carries less again, and compression then spends its limited bits unevenly, often at the expense of dark, low-contrast areas.
The figures vary with the weather, the stadium roof, the time of day and the equipment, so treat any number as illustrative. The pattern does not vary: the scene is wider than the chain. Something has to be given up, and the exposure setting decides what.
Exposing for the sunlit side (what you lose)
Exposing for the bright half is the instinctive choice, because blown highlights look obviously wrong and most of the action may be in the sun. The iris closes down, the grass looks rich, white shirts keep their texture and the sky does not burn out.
The price is paid in the shade. Everything on the dark side of the line sits low in the signal, so shadow detail is thin and noisy. Players in dark kit can merge with the grass, faces become hard to read, and the ball can disappear for a moment as it crosses from sun into shadow. Lifting gain to compensate adds noise, and compression tends to flatten what little texture is left.
Exposing for the shade (what you lose)
Opening up for the shaded half brings the dark side back. Numbers on shirts become legible, the grass regains its texture and the shadow stops looking like a hole in the picture.
Now the sunlit half pays. Bright grass, light kit and advertising boards push into the top of the range and clip. The knee can soften that roll-off, but compressing the highlights flattens them: white shirts lose their folds, the sunlit grass looks washed out, and glare spreads around bright surfaces. The picture can look hazy and low in contrast exactly where viewers expect it to be crisp.
In practice most shading ends up in the middle: a compromise that is slightly too dark on one side and slightly too bright on the other. That is a sensible answer to an impossible brief, but it means neither half of the pitch looks its best.
Player visibility as the practical cost
For viewers, dynamic range is not an abstract number. It shows up as whether they can follow the match. When exposure favours one side of the shadow line, the cost lands on player visibility:
- Players running from sun into shade appear to change brightness abruptly, which makes them harder to track.
- Shirt colours and numbers become harder to tell apart on the poorly exposed side, so team identification slows down.
- The ball can briefly vanish against dark grass or bright glare at the moment it matters most.
- Replays, graphics and clips inherit the same compromise, because they are cut from the same feed.
There is also a matching cost. Different cameras look at the shadow line from different angles, so a wide camera and a tight one can see very different proportions of sun and shade. Keeping them consistent while the line moves through the match adds steady workload in the truck.
Fixes at the camera, in the truck and in the feed
There is no single fix, but there are three places where the problem can be addressed, and they work together rather than competing.
At the camera
Camera choice, positioning and ND filtering are decided before kick-off. They set the starting point, but they cannot follow a shadow that moves across the pitch during the afternoon. Scheduling and stadium design help too, yet they are rarely in the production team's hands.
In the truck
Manual shading is the established answer. A vision engineer rides iris, gain, gamma and knee on the camera control unit, camera by camera, to keep the picture balanced and the cameras matched. It is skilled work and it remains essential. Its limit is that these controls act on the whole frame, so they can move the compromise but not remove it when sun and shade share the same shot.
In the feed
The newer option is to work on the picture itself after the camera. LivePictureAI is a real-time AI processing layer that sits on the camera feeds or on the programme output and balances bright sunlight and deep shadows frame by frame. Rather than applying one setting to the whole image, it rebalances sunlit and shaded regions within the same frame, lifting shadow detail and taming highlight glare together. It adds at most 100 ms of latency and works with SMPTE 2110, NDI, SDI, RTSP and file-based streams.
It does not need new cameras, and it does not replace the shading desk: vision engineers still own exposure and camera matching. It gives them a picture with more usable detail on both sides of the shadow line to work with. We have tested it on football footage and are validating it with selected partners after IBC 2026. If you have a clip where mixed lighting cost you the picture, we would like to see it.