Bokeh

What this is about

Bokeh is judged, not measured. On lens tests before a shoot, DPs point candidates at fairy lights and busy backgrounds to see how each set draws its blur: modern clinical glass renders even, round discs; vintage lenses swirl, vignette and streak. Anamorphics stretch highlights into ovals. The choice matters because backgrounds carry mood in every close-up — a nervous, double-edged bokeh fights the actor for attention, a calm one gives the face the frame. The decision lands in prep, on the rental order.

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:

• Bokeh is not the amount of blur but its character — a cheap lens can blur a lot and still render it harshly.
• More, rounder aperture blades keep highlight discs circular when stopping down.
• Oval highlights and horizontal flares signal anamorphic glass and are often exactly the point.

With TillyGen

In the production plan the lens-test day sits before the rental order is final, so the bokeh decision is made on footage, not on data sheets.

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.