How far should you hold your iPhone for dual camera video?
There is no single number, because a dual recording is really two framing decisions happening at once, and they are not answered by the same thing. How far the phone sits from whatever the back camera is pointed at — a view, a dish, another person — is decided by that subject, exactly like any ordinary single-camera video. How far the phone sits from you is a separate question, and it is the one actually worth thinking about, because it is the one you control on the spot.
The short version: move yourself, not the phone. The back camera's framing takes care of itself once you've picked where to point it; the front camera is where distance is your only real adjustment.
The back camera half of the question answers itself
When the back camera is aimed at a room, a road, a plate of food or another person, how far the phone needs to be from that subject is ordinary framing — the same judgment call you'd make filming with one camera. Recording a second camera at the same time does not change any of it. If the back camera shot looks right on its own, it is right, regardless of what the front camera is doing.
The front camera has one lens, so distance is the only lever you have
An iPhone has exactly one front-facing camera. Where the back camera can offer a choice of lenses on some models — ultra wide, wide or telephoto — there is nothing to switch on the front. Its field of view is fixed, the same way any single lens is, so the only way to change how much of your face and shoulders show up is to change how far you are from the phone.
This is not a special dual-camera rule; it is just the one control that is actually available on that side, worth naming because it is easy to reach for a setting that does not exist instead.
The layout you picked decides how much room you need
A picture-in-picture inset is small and floats in a corner, so it only ever needs to hold a face and a little shoulder — a closer distance that fills that small window comfortably works well, and the layout forgives loose framing because there is not much frame to lose.
Split screen hands your camera a full half of the canvas instead of a small window, which means the top of your head and your hands need enough room that the edge of the frame does not clip them. Left-and-right split is the tightest of the three: fitting two source images side by side into a vertical canvas means roughly a quarter is cropped off each side, so sit further back than feels necessary and keep yourself centred, or that crop will take more than you meant it to.
Layout can change mid-recording, so frame a little wider than you think you need
Layout, the picture-in-picture corner, its size, its shape and the colour filter can all be changed while the camera is rolling. If you start close in picture-in-picture and switch to split screen partway through the take, whatever distance you set for the small window is suddenly what has to fill a full half of the frame instead. A little extra headroom at the start costs nothing and means a layout switch mid-take does not catch you out.
Check the preview, not a rule of thumb
Because both camera images are composited into one frame in real time and that exact frame is what gets recorded, there is no separate "recording distance" to guess at beyond what the live preview already shows you. Get into position, glance at the preview under whichever layout you're starting with, and adjust distance until it looks right there — a few seconds before you press record settles this more reliably than any number of inches.
DualCam builds its viewfinder this way on purpose: the canvas is 1080 pixels wide, either 1080×1920 for standard 9:16 or 1080×2340 to fill a modern iPhone screen, and whatever distance looks right in that frame is exactly what lands in the finished file — nothing gets re-framed afterward.
Common follow-up questions
Does switching the back camera lens change how far I should hold the phone from myself?
No. Which back lens is active only changes how much of the scene the back camera fits in — it has no effect on the front camera, which does not offer a lens choice at all. The two distances stay separate decisions.
If I frame tight for picture-in-picture, will I get cut off if I switch to split screen mid-recording?
You can, especially in a left-and-right split, since that layout crops roughly a quarter off each side to fit a vertical canvas. Layout is one of the controls that stays open during recording, so it is worth framing with a little extra room rather than exactly to the edge of the smallest layout you plan to use.
Does using a tripod, gimbal or selfie stick change what the right distance is?
Not on its own. Those hold the phone steadier at whatever distance you choose; they do not change the front camera's fixed field of view. The framing guidance is the same handheld or mounted — a stabiliser just makes it easier to hold that distance still.
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.