Underexposure

What this is about

Underexposure is the quiet cost of a schedule running late. The shot still looks acceptable on a bright set monitor, and the crew moves on; the damage appears weeks later when the colourist lifts the shadows and finds grain, magenta shifts and banding on smooth walls. Night work is where it hides best, because a dark image is supposed to look dark. The defence is procedural: read the scope, keep a floor for the darkest area that must retain detail, and add a little fill rather than trusting the shadow recovery a spec sheet promises.

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:

• Lifting shadows in the grade amplifies noise along with the picture — you cannot raise one without the other.
• Compressed codecs band in dark gradients such as walls and skies far earlier than raw material does.
• A dark look is safest when it is exposed properly and darkened later, not shot two stops down.

With TillyGen

TillyGen keeps night setups together in the schedule, so the gaffer builds one ambient base instead of improvising fill as the clock runs out.

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.