How to film a nail art or manicure video with both iPhone cameras

This is a close-focus problem before it is a layout problem

The stock Camera app handles a close subject by quietly switching to the ultra-wide lens the moment your main lens can no longer focus on it — that is what the small 0.5x macro badge is doing. That automatic hand-off belongs to a single-camera session, where a virtual capture device is free to swap between several physical lenses behind one continuous zoom control. A multi-camera session, which simultaneous front-and-back recording needs, connects to one specific physical lens per camera instead, so there is no virtual device in the loop to make that swap for you.

The workaround is the same one that applies to any close back-camera shot in a dual recording: pick the ultra-wide lens yourself from the back-lens picker. It is the same physical lens macro mode borrows for its own close-ups, with a much shorter minimum focus distance than the main wide lens, so a hand a few inches from the phone stays sharp on it in a way it will not on the default lens.

Decide the lens before you press record

Back-lens choice locks in the moment recording starts, the same as resolution — there is no switching to ultra-wide mid-take if you begin on the wrong lens and only notice once your hand is under the camera. If the whole point of the video is close detail — a design being painted on, polish going on evenly, a gel cure under a lamp — choose ultra wide before you start rather than planning to switch once you see the shot is too soft.

Tap the hand in frame to focus once you are set up. Focus and exposure follow whichever camera’s image you tap, and at this distance the area that stays sharp is thin, so a tap that lands on the nail itself rather than the knuckle behind it or the table in front of it is worth doing again any time the hand shifts position by more than a little.

Mount the phone — neither hand is free to hold it

A nail video is one of the few formats here where the person filming cannot also be the one holding the phone for most of the take: applying polish, painting a design or holding a client’s hand both take two hands, leaving none for the camera. A small tripod or a stand propped at the height and angle of the work is not a nicety here, it is what makes the shot possible at all.

Being this close also makes ordinary hand-shake more visible than it would be from a normal filming distance, since the area in sharp focus is already thin and a small movement of the phone shifts it more than the same movement would at arm’s length. A phone resting on a fixed stand holds that focus steady in a way a hand ever can, propped or not.

Where your face goes, and which split direction to use if there are two of you

Filming your own nails, alone

Picture-in-picture is the natural default: the back camera on your hands fills the frame, since the detail is the whole point, and your face rides in the small window for the moments you talk through what you are doing. If there is nothing worth saying and the video is meant to be watched rather than narrated, the small window can carry very little or even sit mostly still — nobody is checking it the way they would in an interview.

A nail tech filming a client

A split layout gives the tech’s hands and the client’s reaction equal weight instead of forcing one into a small inset, which matters more here than in most two-person setups because the working hand and the finished nail are often the same shot from two different angles. Top-and-bottom is the direction to reach for, not left-and-right: a vertical canvas trims left-and-right split from the sides, and fingers spread out for a design or a polish check run sideways across the frame — exactly what that crop cuts into first. Top-and-bottom keeps the full width and crops from the top and bottom instead, which is a much safer place to lose a little headroom than the middle of a spread hand.

Skip the color filter — the polish is the point

DualCam’s six live filters — None, Vivid, Warm, Cool, Mono and Film — are composited into the frame as you record, and every one except None shifts color to some degree. That is a reasonable creative choice for a lot of the videos on this site, but a nail video is one of the few formats where the exact color is the actual subject: a client comparing polish shades, or a design meant to read as a specific color, both need the frame to show what the polish actually looks like rather than a warmed, cooled or desaturated version of it.

None is the safe default for that reason. If you do want to try a filter — Vivid for a bold color story, say — it is one of the settings that can change mid-recording without any risk to the file, so the honest way to decide is to glance at the live preview against the actual bottle rather than guessing in advance.