A vertical is a category contract. It is the difference between a shot list about a jacket and a shot list about apparel, where fit, drape and movement are what sells it, so a static pose sells none of it.
It does three things, and they are worth telling apart.
| It does | Which means |
|---|---|
| Fills blanks | Supplies the format and the aspect you did not name. Anything you passed wins, it never overrules you |
| Appends a clause | Adds a sentence to each planned shot, keyed to what that shot is doing |
| Refuses | Turns down inputs it cannot work with before a single row is written |
The four
| Vertical | Reach for it when | It will not start without |
|---|---|---|
| Physical product | There is a thing you can hold, and the label has to stay legible | At least one product image |
| Apparel | The product is worn, and movement is the sell | A product image, plus a creator in UGC |
| UGC talking head | One person, one room, one phone, and the words carry it | A creator, and the brief’s problem and benefit |
| Digital SaaS | There is no SKU to photograph: the interface is the product | The page it is sold from |
Three of them work in both Marketing Studio and the UGC Factory. UGC talking head is UGC only, and asking for it in a marketing lot is refused by name: Marketing’s spokesperson is free text on a brief rather than a mounted face, so there is nothing for it to check.
A refusal costs nothing, and that is the design
It refuses before anything is created, and names every gap at once.
Apparel with no product image is turned down by name. So is a talking head with no creator. You have not paid for anything, nothing has been written, and the message tells you every unmet requirement rather than the first one, so the fix is one action rather than four round trips with somebody waiting through each.
This is the cheapest place in the product to discover a missing input. Finding out at batch time that four of twelve SKUs have no usable photograph is a much worse hour than finding it out here.
It fills blanks; it never overrules
Anything you pass (the format, the structure, the aspect) wins over the vertical’s default. The vertical only supplies what you left out.
Apparel deliberately supplies no script default at all. Which garment story to tell (a before-and-after, a day in the life, a fit walkthrough) is an editorial call, and guessing it would be the convenience overriding the decision the vertical exists to save you.
Why a vertical can look like it did nothing
The clause is keyed to the shot’s role. A shot whose role that vertical does not decorate comes back untouched, which on a short lot can be most of them.
The listing tells you which roles get decorated and deliberately does not show you the clause itself. If you could read the sentence you would be tempted to write it into the prompt yourself, and then it is in the shot twice, once from you and once from the vertical, arguing with itself.
It is not the same thing as a capture style
A vertical says what the lot is for. A capture style says how it was shot, who was holding the camera. They compose: apparel on a phone is an ordinary lot, and a very common one.
Both refuse by name if you get the id wrong, which is worth appreciating, the third vocabulary, the look, does not. A misspelled look id is accepted, stored, echoed back to you, and then silently ignored at render, so the axis simply never happens and nothing anywhere says so.
More on that in Continuity chains, which is where looks earn their place.