Case Study 2: Shoot-Along — The Doorway, Covered So It Cuts (and One Take That Doesn't)

This is a from-scratch production walkthrough in the book's walk-and-talk / continuity setup — a person moving through space, shot so the pieces assemble. It is deliberately doable by one person with a phone in a home or office doorway. We shoot a simple entrance three ways so it cuts invisibly, then shoot one take that crosses the line so you can watch the error happen and never forget it. Where Case Study 1 analyzed a famous film, this one puts you behind the camera. Read it with your phone in your hand.

The brief and the constraints

The brief: capture a 10-second action — a person walks through a doorway, crosses a room, and sets a bag on a table — as cuttable coverage. By the end we want three shots that assemble into one seamless entrance, plus a fourth, broken take that proves why the rules matter.

The constraints (chosen so anyone can do this today):

• One camera — a phone is ideal. We'll shoot each size as a separate take, which is exactly how a solo shooter works and exactly what forces good continuity discipline.
• One subject — a friend, or yourself with the camera locked off and a run to your mark. (A two-person exchange is a great extension; we note it at the end.)
• A real doorway — any door into any room with space to cross to a table. No set, no budget.
• Available light — whatever the room has. We're practicing continuity, not lighting (that's Part III), so we just keep the light consistent across takes.
• 20 minutes. This is a fast, repeatable drill you'll run many times.

The single discipline that makes or breaks the whole thing: pick one side of the line of motion and shoot every size from it. Everything below is in service of that.

Gear and settings

You need almost nothing: a phone (or any camera), something to brace or mount it on (a stack of books, a cheap tripod, a windowsill), and a table with a bag or box to set down. If you have a lav or you're close enough for clean sound, capture audio; if not, the footage still teaches the lesson silently.

⚙️ Settings Box — the cuttable-coverage entrance (a starting point, not a recipe)

Setting	Choice	Why
Resolution	1080p or 4K	4K gives you room to reframe/stabilize in post; 1080p is plenty for the drill.
Frame rate	24 or 30 fps	Match whatever the rest of Project 1 uses — frame-rate continuity matters across a piece.
Shutter	~1/50 s (24 fps) or 1/60 s (30 fps)	The 180° motion look from Chapter 2; keep it identical across all takes.
Aperture / ISO	Whatever exposes the room cleanly	Lock it once and don't change it between sizes — exposure must match shot to shot.
White balance	Set manually (e.g. a fixed Kelvin)	Auto WB will shift between takes and break color continuity. Lock it.
Focus	Manual or locked AF on the subject's path	Hunting autofocus ruins matching action; lock where you can.
Mic / audio	Lav or close phone mic if possible	Consistent room tone across takes (Ch. 15); silence is fine for the drill.
Camera position	Braced/mounted, one side of the line	Locked-off framing is what makes two takes matchable.

The through-line of the whole box: lock everything and change nothing between takes except the shot size. Auto anything — exposure, white balance, focus — is a continuity leak, because the camera will make different decisions on take two than it did on take one.

The setup: find the line first

Before a single frame, we walk the space and find the geometry. The subject will enter through the door on one wall and cross to a table on the far side. That path — door to table — is the line of motion. Our only structural decision is which side of that path the camera lives on. We choose the side with more room to stand and better light, and we commit: every size gets shot from this side.

FIGURE CS2.1 — The doorway shoot: one line of motion, three matched setups (top-down)

     DOOR |__                                             TABLE  [==]  (bag goes here)
          ( S ) >  >  >  >  crosses the room  >  >  >  >   (v)
    ------------------------ LINE OF MOTION (door -> table) ---------------------------
          |            |                    |
       [CAM 1]      [CAM 2]              [CAM 3]              <- ALL on the same side
        WIDE         MEDIUM               INSERT                 (the "near" side)
      whole room   waist-up, tracks     close on the hands
      establish    the same walk        setting the bag down

                                    ( X )  <- [CAM X] the FORBIDDEN spot:
                                              across the line. We'll shoot ONE
                                              take from here to see it break.

   CAM 1, 2, 3 all sit below the line -> subject always moves LEFT-to-RIGHT -> they cut together.
   CAM X sits above the line -> subject moves RIGHT-to-LEFT -> its take will NOT cut with the others.

Read it as a floor plan. The subject moves left-to-right along the line of motion. Cameras 1, 2, and 3 — our wide, medium, and insert — all sit on the near side, so all three see the subject moving left-to-right. They will cut together cleanly. Camera X, marked forbidden, sits across the line; anything shot from there shows the subject moving right-to-left and will not cut with the others. We'll visit Camera X once, on purpose, at the end.

Notice we've also honored the 30-degree rule without extra thought: because the wide, medium, and insert are at genuinely different distances and slightly different angles along our side, no two of them are similar enough to jump. Continuity discipline tends to be self-reinforcing — pick a side and vary your sizes, and most of the rules take care of themselves.

The shoot, phase by phase

Phase 1 — the establishing wide

We mount the camera at CAM 1, framing the whole room: door on the left, table on the right, enough headroom to see the subject stand and walk. The subject starts outside the door. We roll, wait a beat (a handle for the editor), and cue the entrance. The subject pushes the door, steps through, crosses at a natural pace, and sets the bag on the table. We hold a beat after and cut. Then we do it twice more, identically — same pace, same foot through the door first, same hand pushing.

The thinking: the wide's job is geography — establish where we are and which way the subject moves. Its most important feature isn't the framing; it's that it runs the entire action from before the door to after the bag lands, so it overlaps everything the other sizes will do. We resist the temptation to cut the wide short at the door "because the medium will take over there." The overlap is the whole point.

FIGURE CS2.2 — "Doorway wide"        [constructed teaching example -- shoot-along]
  THE FRAME    Wide of the room, door frame-LEFT, table frame-RIGHT. Subject enters small, crosses, sets
               the bag down. We see the whole geometry at once.
  THE MOVE     Locked off, braced on a shelf at CAM 1. The subject supplies all the motion, L->R.
  THE LIGHT    Room's available light; exposure and white balance LOCKED so takes match.
  THE SOUND    Door, footsteps, room tone (or silence for the drill).
  THE CUT      Runs the FULL action with handles both ends. Will hand off to the medium mid-cross, on a step.
  THE EFFECT   Orientation: we know the space and the direction before we ever go closer.
  THE LESSON   The establishing size earns its keep by overlapping everything -- shoot the whole action, always.

Phase 2 — the matching medium

Without crossing the line, we move the camera closer and slightly around to CAM 2 — waist-up on the subject as they cross. Crucially, we do not just zoom from CAM 1's spot (that would risk a jump); we physically reposition, staying on our side. We re-cue the identical entrance: same pace, same foot, same push. We run the whole action again — door to table — so the medium overlaps the wide.

The thinking: the medium's job is intimacy and the cut point. We want it to contain the same step the wide contains, so the editor can cut from wide to medium mid-stride and let the leg-swing carry across. So we watch the subject's pace like a hawk and, if take two drifts faster than take one, we reset and go again. Matching action is mostly matching tempo.

FIGURE CS2.3 — "Doorway medium (matched)"        [constructed teaching example -- shoot-along]
  THE FRAME    Waist-up on the subject crossing the room, still moving L->R, door now off-frame LEFT behind
               them, table ahead frame-RIGHT. Same bag, same shoulder as the wide.
  THE MOVE     Locked off at CAM 2 -- closer and a touch around, but on the SAME side of the line.
  THE LIGHT    Same locked exposure and white balance -> the light direction reads identical to the wide.
  THE SOUND    Same footsteps and room tone; the ear mustn't lurch.
  THE CUT      Overlaps the wide across the full cross; we'll cut INTO this on a step and OUT of it as the
               bag nears the table (handing off to the insert).
  THE EFFECT   The audience feels the camera "move closer" to someone simply continuing to walk. Seamless.
  THE LESSON   A matching medium is the SAME moment, same direction, same pace, with overlap -- from the same
               side of the line. Reposition; don't just zoom.

Phase 3 — the insert

Now the detail: a close shot of the hands setting the bag on the table, at CAM 3, still on our side. This is the shot that will hide any imperfection and give the sequence a satisfying button. We frame tight on the tabletop and the hands, and we shoot the bag being set down several times, with a little overlap — the hands entering frame, the bag landing, the hands releasing.

The thinking: the insert is our safety net and our cutaway. If the wide-to-medium cut has any tiny mismatch, we can cut to the insert to cover it. It's also our first taste of this chapter's Production Checkpoint logic — a matching detail shot, shot to cut against the main coverage. We make sure the hands move the same way they did in the wider takes (same hand, bag set down in the same spot) so the insert honors the detail continuity of §9.5.

FIGURE CS2.4 — "The bag-down insert"        [constructed teaching example -- shoot-along]
  THE FRAME    Tight on the tabletop: hands lower the bag into frame from the LEFT (matching the L->R travel)
               and set it down frame-RIGHT. Nothing else in shot.
  THE MOVE     Locked off at CAM 3, close. Only the hands and bag move.
  THE LIGHT    Same locked look; the tabletop light matches the room.
  THE SOUND    The soft thump of the bag -- a natural sound to cut on.
  THE CUT      Cut to this as the bag nears the table in the medium; the motion and the sound carry across.
               It also stands ready as a cutaway to hide any bump in the wide->medium cut.
  THE EFFECT   A tactile close that "lands" the action and completes the little journey.
  THE LESSON   An insert both finishes a sequence and insures it -- a matched detail is a cutaway you can hide
               a trim behind (the exact logic of this chapter's Production Checkpoint).

Phase 4 — the deliberate mistake: crossing the line

Now the instructive part. We pick up the camera and walk to CAM X — across the line of motion — and shoot the medium of the entrance from there. Everything else stays the same: same subject, same pace, same bag, same push. Only the camera has crossed to the far side.

The thinking: we're manufacturing the error on purpose so we can watch it in the edit. This is the single most valuable thing a beginner can do with an afternoon — not to avoid the mistake in theory, but to see it happen with their own footage, so the rule stops being abstract.

FIGURE CS2.5 — "The crossed-line take (the error)"        [constructed teaching example -- shoot-along]
  THE FRAME    Waist-up on the subject crossing -- but now the door is off-frame RIGHT and the table is
               frame-LEFT. The subject appears to move RIGHT-to-LEFT.
  THE MOVE     Locked off at CAM X, on the FAR side of the line of motion.
  THE LIGHT    Same locked settings -- and yet it will feel wrong, because DIRECTION, not light, is broken.
  THE SOUND    Identical. Sound can't save a spatial error.
  THE CUT      Try to cut the CAM-1 wide (L->R) to THIS medium (R->L) and the subject flips direction
               mid-step -- appearing to about-face and walk back toward the door.
  THE EFFECT   Instant disorientation. The viewer can't say why; they just feel the room turned inside out.
  THE LESSON   A perfectly exposed, perfectly performed, perfectly framed shot is USELESS if it crossed the
               line. Geography is not negotiable. This is why we found the line FIRST.

The edit pass

Drop all four takes into any timeline. Here is the assembly and the decisions that make it invisible — then the one cut that won't.

FIGURE CS2.6 — The doorway assembly (video track, cuts marked | )

  GOOD ASSEMBLY (all from our side of the line):
  V1  [ CAM1 WIDE: door + start of cross ###|### CAM2 MEDIUM: cross ####|## CAM3 INSERT: bag down ### ]
                                            ^cut on the step        ^cut on the reach, near the table
     Result: one seamless entrance. A viewer sees a single continuous walk-in, camera moving closer twice.

  BROKEN CUT (introducing the crossed-line take):
  V1  [ CAM1 WIDE: subject moving L->R ###|### CAMX MEDIUM: subject moving R->L ... ]
                                          ^ here the subject FLIPS direction -- the illusion collapses

Decision 1 — cut the wide to the medium on the step. We scrub the wide to a frame where the subject's leg is mid-swing, and cut to the medium a frame or two into the same swing, nudging until the motion is continuous. Because both takes ran the full cross at the same pace, we have a wide window to find the perfect frame. The cut disappears. This is matching action and cutting on action paying off exactly as §9.3 promised.

Decision 2 — cut the medium to the insert on the bag-down. As the bag nears the table in the medium, we cut to the insert as the hands lower it, letting the soft thump and the downward motion carry the seam. Two invisible cuts, one continuous entrance.

Decision 3 — watch the crossed take fail. Now we swap CAM X's medium in where CAM 2's belongs. Play it. The subject walks in, and then — snap — reverses direction and appears to head back out the door. Nothing about the shot is technically wrong; it's the relationship between the shots that's broken. No trim, no dissolve, no cutaway fully rescues it (though we can feel how a neutral head-on shot or a cutaway between them would at least soften the blow — try it, per Exercise 14). The only real fix was on set: don't cross the line.

The lesson of the edit pass: the good cuts took seconds because the footage was shot to fit; the broken cut can't be fixed at any speed because the footage contradicts itself. That asymmetry — cheap on set, impossible in post — is the entire argument of the chapter, and now you've felt it in your own timeline.

What we'd adjust next time

Every shoot teaches its own refinements. On this one, the notes that recur:

• Match tempo harder. The most common miss is the medium being a hair faster or slower than the wide, so the cut-on-action doesn't quite carry. Solution: count the cross silently ("one-two-three-set") and hold the same count every take.
• Roll longer handles. We always wish we'd started rolling a second earlier and held a second longer. Handles are free insurance for the cut points.
• Snap the reference photo. Even on a one-subject drill, a quick photo of the bag's start state and the subject's mark keeps take six honest against take one.
• Lock the phone's auto-everything. The sneaky continuity leak is auto exposure/white balance/focus shifting between takes. Lock them, or the light and color won't match even though you did everything else right.

Troubleshooting: when the cut still won't sit

You did everything above and the wide-to-medium cut still has a little bump. This is normal — matching action is a skill that sharpens with reps. Here's the diagnostic table to run, in order, from most to least common cause.

Notice how many rows end in "reshoot." That is the honest truth of continuity and the whole reason it belongs on set: the cheapest fix for almost every one of these is another take now, while the camera, the subject, and the light are all still here. The same problem discovered at the timeline costs you a shot, a cutaway, or the whole cut.

The continuity log (what to write down)

On a large production, a script supervisor keeps a written log so that take 6, shot hours after take 1, still matches. Solo, you can keep a tiny version of the same thing — three lines in a notes app per scene:

SCENE: doorway walk-in
  LINE:      window side (camera stays here, all sizes)
  DIRECTION: subject moves L->R, door=left, table=right
  DETAILS:   bag on RIGHT shoulder; door pushed with RIGHT hand; sets bag frame-right
  SIZES:     [x] wide  [x] medium  [x] insert   (all from window side)
  REF PHOTO: [x] table start-state

That is the professional habit in miniature: externalize the geometry and the details so you're not trusting a memory that's busy with forty other things. Glance at it before every take. It is the difference between a shoot you can cut and a shoot you hope you can cut.

✂️ In the Edit: the insert earns its keep twice. In a clean assembly the insert is a satisfying button on the sequence. But its second, hidden job is insurance: any time the wide-to-medium cut has a bump you can't smooth, you cut to the insert instead and let it cover the seam — the hands on the bag are interesting enough that the viewer never misses the transition you were hiding. This is exactly why Project 1's Production Checkpoint has you shoot a matching insert for your talking-head: it is the shot that rescues every trim you'll make in the edit. Shoot inserts you might not need. You will almost always end up needing them.

Discussion questions

1. We found the line before framing a single shot. Why is that order non-negotiable, and what tends to go wrong when a shooter frames first and thinks about geography later?
2. The wide "runs the full action" even though the medium takes over partway. Explain, in edit terms, why cutting the wide short at the door would have hurt you.
3. We got the 30-degree rule "for free" by varying our sizes on one side. When might you still accidentally violate it even while staying on the correct side of the line?
4. The crossed-line take was technically flawless — good exposure, focus, framing, performance. Why is "technically flawless" not enough? What does this say about the relationship between a shot's quality and its usability?
5. This shoot used one subject. Sketch how the line and the setups would change for a two-person exchange (a handoff) instead — where is the line then, and how do eyelines enter?
6. Which single settings-box item, if left on "auto," would most quietly sabotage continuity, and why?

Your turn: the exchange (extension)

Level up from one subject to two, where continuity gets its full workout.

The brief: shoot a two-person handoff — one person hands an object (a cup, a key, an envelope) to another — as cuttable coverage, then break it once on purpose.

• Find the new line. With two people, the line runs between them. Everything you shoot (wide two-shot, each person's medium, the insert of the hands meeting) comes from one side of that line.
• Mind the eyelines. If the giver looks screen-right at the receiver, the receiver must look screen-left back. Shoot each person's single so their eyelines point at each other across the cut (§9.5).
• Match the action of the handoff. The object leaves one hand and enters the other — shoot that exchange in both the wide and the insert with overlap, and cut on the object's movement.
• Then cross the line on one person's single and watch the two of them suddenly appear to look the same way, as if addressing a third person who isn't there.
• Assemble both and show a friend. Ask them, on the broken version, "what feels wrong?" Their inability to name it — while clearly feeling it — is the whole reason continuity is a discipline and not a suggestion.

Key takeaways

• Find the line first, then frame. The one structural decision — which side of the line of motion you live on — determines whether your coverage cuts. Make it before anything else.
• Lock everything; change only the shot size. Auto exposure, white balance, and focus are continuity leaks. Matching takes start with a locked camera.
• Run the full action in every size, with overlap and matched tempo. That overlap is what lets the editor cut on the move and hide the seam — cheap to shoot, impossible to add later.
• Get the 30-degree rule for free by varying your sizes on one side of the line; reposition for each size rather than zooming from one spot.
• The insert both finishes and insures the sequence — a matched detail shot is a cutaway you can hide a trim behind (the exact logic of Project 1's checkpoint).
• A technically flawless shot that crossed the line is unusable. Geography is not negotiable, and no edit trick fully rescues a reversed screen direction — which is why the fix has to happen on set.
• Keep a three-line continuity log — line, direction, details — even solo. Externalizing the geometry beats trusting a memory that's busy with forty other things, and it's what keeps take six matching take one.
• The insert earns its keep twice: as the button that finishes the sequence, and as the buffer you cut to when a cut won't quite sit — which is exactly why Project 1 has you shoot one.
• You learn this fastest by breaking it on purpose: shoot the crossed-line take, watch the subject flip in your own timeline, and you will never cross the line by accident again.