Principal Photography Commences
"Principal photography commences" is one of those phrases everyone in this industry says and almost nobody explains. So here it is: it's the official start of filming with the principal (lead) cast, as opposed to second unit work, reshoots or pickups. It's the line between "this movie is being made" and "this movie is being planned."
Case in point: the trades have The Batman – Part II in pre-production, with principal photography set to start January 1, 2026 at Warner Bros. Studios Leavesden in London. Big title, big stages. But the interesting part isn't the film. It's what that phrase quietly tells you about how productions move.
What that phrase is covering for
By the time cameras roll, a production has been running for months. Financing closed. Script locked, or locked enough. Department heads hired. Locations scouted and secured, sets built, equipment ordered, a full crew assembled. Coordinators, ADs, art department, transpo, all of it. "Principal photography commences" is the end of pre-production and the start of the shoot, in one tidy phrase.
Which is why the date matters more than it looks like it should. A show starting January 1 was staffing its office back in the fall. Coordinators were building crew lists, the UPM was finalizing the budget, department heads were already bringing in their people.
Why this matters if you want a PA job
The hiring window is pre-production. That's when the office is being set up, when a coordinator is buried in paperwork, and when an extra pair of hands is genuinely useful. So when you're reading production trackers, the word to look for is "pre-production," not "principal photography." And the location matters as much as the title. A London stage shoot doesn't help you much if you're in Atlanta or Albuquerque. Track what's shooting where you actually live.
Then do both things at once: keep an eye on what's gearing up near you, and apply to what lands on the MFJF job board the day it lands. Those entry level roles come from production offices in exactly this phase.
Make it a habit
Check your tracking sources weekly. Not for the trivia, but to catch "pre-production" next to a city you can get to. Keep a simple list: title, company, stage, who you contacted, when. Do that for a few months and you'll understand how productions staff up, which puts you well ahead of people who only notice a movie once it's famous.
Got a question about any of this? Just hit reply and ask us.
Liv
olivia@myfirstjobinfilm.com