Hyperfocal Distance

What this is about

Hyperfocal focusing is how unmanned cameras stay sharp. Crash cams on stunt rigs, car mounts, drones and VFX plate cameras cannot carry a focus puller, so the AC sets focus to the hyperfocal distance for the chosen stop and locks it. Everything from half that distance outward holds. Deep-focus styles use the same math deliberately: stop down, focus hyperfocally, and let foreground and horizon share the frame. Apps and lens tables deliver the number; the AC's tape measure makes it real.

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:

• The number depends on focal length, aperture and the circle-of-confusion convention — two charts can legitimately disagree.
• Short lenses reach hyperfocal fast: a stopped-down wide angle is sharp from a couple of meters out.
• Hyperfocal sharp means acceptably sharp, not critically sharp — infinity is at the tolerance edge.

With TillyGen

TillyGen's shot list marks rigged and unmanned shots, so the plan shows early which setups need locked hyperfocal focus instead of a puller.

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.