How to film a golf swing video with both iPhone cameras
A single phone filming a swing usually gives you one of two disappointing results: a clean swing with no reaction at all, or your face up close next to a swing shot from whatever angle the phone happened to be leaning at, chosen for neither purpose in particular. Recording front and back at once puts both in the same file — one camera set up the way a real swing video should be, the other holding your reaction, or a coach’s read of the shot, in a small window, without a second setup.
What makes a swing different from a reaction shot or a tutorial demo is that its useful camera angle is fixed by the sport itself, not by wherever is convenient to stand, and that a swing is over in under two seconds — so the only chance to get the framing right is before you press record, not something to fix later by scrubbing through the footage.
Choosing a camera angle before you choose a layout
Golf instruction video has used two vantage points for decades, and they still apply when the camera is a phone instead of a camcorder. Down the target line — behind the ball, a step outside the intended path of the club, roughly waist height — shows the shape of the swing itself: the takeaway, the path through impact, whether the clubface is square. Face-on — level with the golfer, aimed at the chest, perpendicular to the target line — shows tempo, weight shift and posture instead. They answer different questions, and one frame cannot do both well at once; that is true of any camera and has nothing to do with recording two of them together.
What dual-camera recording actually changes is what the second camera is for. Instead of a second angle on the swing, the front camera keeps your own face in frame — a coach narrating what they are seeing, or simply your reaction to the shot — wired into the same file as the swing itself instead of a separate clip you would otherwise have to line up afterward.
Framing for the top of the backswing and the follow-through, not the address position
A golfer standing at address looks compact — hands together, club resting near the ground — and it is tempting to frame tightly around that stance. The swing does not stay that small. At the top of the backswing the club points well behind and above the body; in the follow-through it finishes high and across the front. Either position can put the clubhead outside a frame that was set for someone standing still, and once that frame has been composited there is no extra picture hiding behind the edge to recover — the moment the top of the swing goes off-frame during recording, it is gone from the file for good.
Stand a step further back than address looks like it needs, or switch to the ultra wide lens on the back camera if your iPhone has one and the range allows it, and check one practice swing against the live preview before you record for real — the canvas is exactly what gets written to the file, so if the club stays inside it there, it stays inside the finished clip too. Whichever framing you land on, decide it before the take: the back camera’s lens locks the moment recording starts, the same as resolution, so switching it mid-bucket does nothing for a swing that is already on file.
Deciding which camera leads — and when to swap it
DualCam lets you swap which camera fills the main frame and which one rides in the small window, and unlike lens and resolution, that swap is free to make while the camera is rolling. For a swing, that freedom is not much use mid-take: a full swing is over in under two seconds, nowhere near enough time to react to the preview and swap anything. Decide before each take instead — back camera leading while you are actually studying the swing, front camera leading for the handful of takes where the point is your own reaction to a shot that just went well, or a coach talking through what they saw.
This is also the moment to think about which one you will actually rewatch. A swing-check clip that gives its full frame to your face and shrinks the swing itself into a small window is not much of a swing-check clip — the small window is exactly where the resolution loss described below hurts the most.
Mount it — a swing needs both hands, and review needs a steady frame
A golf swing takes both hands off the phone by definition, so the handheld-versus-mounted question answers itself here: there is no version of filming your own swing where you are also holding the camera. A tripod, a ground stake made for a phone, or a clip on a bag or cart puts the phone at the angle and height decided above and keeps it there for a whole bucket of balls.
It happens to solve a second problem at the same time. A multi-camera capture session is limited to a plainer stabilization mode than a single camera gets, because every input in the session has to run a format the shared hardware budget can afford, and the heavier stabilization modes are not part of what that budget covers. A mount removes the shake at the source instead of asking a format that cannot fully compensate for it to smooth things out afterward — which matters more here than in most dual-camera footage, since a swing check is exactly the kind of clip you plan to step through frame by frame.
Getting close enough beats zooming in during review
Pinch-to-zoom works the same way it does in any camera app — it gets you closer within whichever lens is currently active — but past that lens’s optical range, it is a digital crop and enlargement of the sensor image, and detail drops the further in you go. That is true of any phone video, but it costs more here: a dual-camera recording already sits on a lower resolution ceiling than a single-camera clip, encoded at 720p or 1080p rather than 4K, because two live camera pipelines share one hardware budget. Cropping into a small region of a frame that started lower-resolution loses more real detail than doing the same thing to 4K footage would.
The practical version of that fact: get the real distance right during the take rather than planning to crop in tight during review afterward. If checking the exact position of the clubface at impact is the point of the clip, stand close enough on the day that impact fills a meaningful part of the frame at its native size, rather than counting on zooming into a wide shot later to find it.
One take per swing, not one file per bucket of balls
A dual-camera recording runs straight through from record to stop, with no pause button that freezes it mid-file and lets you pick back up between swings — so do not try to record a whole bucket as one continuous file. Stop after each swing and start fresh for the next one; the gap between swings was not usable footage either way, and settings that lock for the length of a take — resolution, mute, the countdown — unlock again the moment you stop, so a mis-set option only ever costs you one swing rather than the whole session.
It also keeps a long range session from working against itself in the heat, since the phone gets a short break between takes instead of running two camera pipelines and an encoder continuously for however long a bucket of balls takes outdoors, often in direct sun. Every take lands in DualCam’s own library with a thumbnail, so a session shot swing by swing gives you a set of clips to pick the one worth reviewing or sending to a coach, rather than one long recording to scrub through to find it.
Common follow-up questions
Should the swing or my face be the full-frame camera?
Usually the swing. DualCam lets you swap which camera leads and which one is the small inset, and that swap is free to make between takes — but a full swing lasts under two seconds, too short to react to and swap mid-swing, so decide before you start each take instead.
Can I zoom in after recording to check my position at impact?
You can pinch into the recorded frame the way you would any video, but a dual-camera recording is already encoded at 720p or 1080p rather than 4K, since two cameras share one hardware budget. Cropping into a small region of that costs more detail than doing the same to a single-camera 4K clip would — standing close enough during the take matters more here than usual.
Can I record a whole bucket of balls as one file?
Not usefully. A dual-camera recording has no pause button — it runs straight through from record to stop — so treat each swing as its own take and stop between them. That also gives the phone a break between takes, which helps on a long session outdoors.
Want to just do this?
DualCam records the iPhone front and back cameras at the same time and writes one finished MP4 while you shoot. Free, no account, no ads, nothing leaves the phone.