PRODUCT SLICE 13 · SEPTEMBER 18, 2026

Product Slice 13 — Camera grammar

Until now every TunnelVision journey was first-person: the camera was the traveler. That is still one grammar. It is no longer the only one. A Project now picks a whole-journey camera relationship — POV, FOLLOW, LEAD, or MOUNTED — and Director, stills, Cinematographer, and the locomotion baseline all stay on that choice. The filmmaker describes the movie. TunnelVision figures out how to shoot the journey.

POV

The camera is the traveler. Unembodied. It moves through the world along the physical route, turning and banking with the road. No cockpit, hood, hands, or persistent rig.

FOLLOW

An invisible objective camera pursues a persistent subject. The relationship holds; the distance does not have to. The subject may pull ahead. The camera may lag, catch up, or bank. It does not overtake, and it is not a second traveler.

LEAD

An invisible objective camera stays ahead of the subject and faces them, usually retreating as they advance. Forward-only POV travel is not this grammar.

MOUNTED

The camera is attached to the moving subject. Motion inherits the vehicle. Hood, frame, or similar geometry may stay in the shot — that is the point, not a mistake.

One Project. One journey. One grammar.

Grammar is a Project setting, not a per-shot switch. Mixed POV then FOLLOW then LEAD in a single journey is out of scope. Prompt Coach, Director, and CM share the same setting so the human prompt does not have to restate low-level camera law on every beat. The old locomotion baseline assumed first-person forward travel; that would rewrite LEAD into a fly-past. Each grammar now has its own baseline. Segment Motion Plan still describes this pair first; the grammar baseline comes after.

The four tests below are the same story: a red sports car, a desert highway, a canyon road, a rock tunnel, a high bridge, an overlook. The variable is camera relationship. Canonicals show how each grammar sees the route. The movies show how it moves. Watch those.

POV

CAMERA IS THE TRAVELER

Empty road. The car is not a persistent foreground. Path-relative forward travel through the canyon.

APOV opening: empty desert highway toward red-rock cliffs
Highway
BPOV canyon mouth
Canyon
CPOV tunnel entrance
Tunnel
DPOV gorge bridge
Bridge
EPOV mountain pass
Overlook

FOLLOW

INVISIBLE CAMERA IN PURSUIT

The red car is the continuity anchor. Distance may open on the cliff road. That is FOLLOW, not a bolted-behind mount.

AFOLLOW opening: red car ahead on the desert highway
Highway
BFOLLOW canyon road
Canyon
CFOLLOW tunnel entrance
Tunnel
DFOLLOW gorge bridge
Bridge
EFOLLOW mountain overlook with the car farther ahead
Overlook

LEAD

AHEAD, FACING THE SUBJECT

The camera retreats. The car comes toward it. Do not read this as a reverse-angle error or a forward fly-past.

ALEAD opening: red car racing toward the camera on the desert highway
Highway
BLEAD canyon road
Canyon
CLEAD inside the tunnel looking back at the oncoming car
Tunnel
DLEAD gorge bridge
Bridge
ELEAD mountain pass
Overlook

MOUNTED

ATTACHED TO THE CAR

Hood and body stay in frame. The camera inherits acceleration, banking, and vibration.

AMOUNTED opening: red car decklid in the foreground, canyon highway ahead
Highway
BMOUNTED canyon road
Canyon
CMOUNTED tunnel entrance
Tunnel
DMOUNTED gorge bridge
Bridge
EMOUNTED mountain overlook
Overlook
The videos are the argument.

Same route. Four relationships. Slice 8 remains the product overview. Slice 12 remains Agent CREATE JOURNEY. This chapter is the camera-grammar control: a Project setting, four dedicated baselines, and four watchable cuts of the same canyon. Mixed-grammar journeys stay post-hackathon.