Overexposure
Overexposure occurs when parts of the image receive more light than the sensor can record, so those areas clip to featureless white.
What this is about
Clipping is the one exposure error with no repair in the grade, so the set treats it as a hard limit. The operator watches zebra at the clipping threshold while shooting; the DIT confirms on the waveform, because a single clipped colour channel can hide inside an area that still looks fine. Costume and production design are part of the fix: a garment swapped from bright white to off-white in prep saves the gaffer an hour of flagging.
A term only helps when everyone on set means the same thing by it — so what follows is how it is used, not a dictionary definition.
What runs differently here
In planning terms, that means:
- Clipping is irreversible: once a channel reaches maximum, there is no detail left in the file to recover.
- One channel can clip while the other two survive, which shows up as a colour shift rather than a white patch.
- Bright but unclipped is not an error — highlights near the top with detail intact are normal in log.
With TillyGen
When TillyGen's location notes flag a bright window, the schedule reserves rigging time for gels or ND before the first setup is lit.
Change one constraint and the consequences travel through the whole plan: affected shots are flagged, the call sheet is regenerated, and nobody keeps working from yesterday's version.
Frequently asked
Is a blown-out window always a mistake?
No. Many looks let a window go pure white on purpose. It becomes a mistake when the shot cuts against coverage where the same window still has detail.
How long does it take to get started with TillyGen?
A first project takes under an hour to set up. There is no configuration phase in which templates and fields have to be defined before the tool produces anything.
Can the results be exported?
Yes — as PDF for the crew, CSV for downstream systems and through the API for anything automated. The plan stays the source; the exports are views of it.