What happens if you deny Photos permission to a dual camera app?

Three permissions, three separate moments

iOS treats camera, microphone and photo library access as three independent protected resources, each with its own prompt, its own authorization status, and its own toggle in Settings. A dual-camera app asks for camera and microphone up front, because it cannot build a capture session without knowing what it has to work with. It asks for Photos access much later, the first time you actually tap Save, because that is the first moment the app has anything to write into your library and the first moment it genuinely needs that permission.

This staggered asking is not an accident or a quirk of one app — it is the same one-time-prompt-per-resource pattern iOS uses everywhere, and it is why you can deny Photos permission on day one, use the app normally for weeks, and only run into the prompt again once you decide to keep a clip permanently.

What actually breaks, and what does not

A denied Photos permission does not stop recording, does not shorten a take, and does not touch anything already finished. DualCam keeps every recording inside its own library the moment it stops, independent of whether you have ever granted Photos access at all — that in-app storage does not depend on the system photo library in any way. Save is the only feature that needs the permission, because Save’s entire job is writing a copy into a library outside the app.

Tap Save without the permission and the app cannot silently succeed or silently fail — iOS itself blocks the write, so the honest behavior is telling you plainly that access is needed, rather than pretending the copy went through when it did not.

Share still gets a file out, without asking for this permission at all

Save is not the only way a clip leaves the app. Share opens the ordinary iOS share sheet, which can hand the finished file to Messages, Files, a specific editing app, or Photos anyway through its own separate flow — and it does not require the same standing photo-library permission Save does, since you are directing the file to a destination in the moment rather than granting an app blanket write access to your library. If Photos permission is denied and you just need the clip somewhere else once, Share is the more direct route, not a workaround.

Turning it back on

The toggle lives in Settings, either under the app’s own entry or under Settings → Privacy & Security → Photos, alongside every other app that has ever asked for library access. Turning it on there does not touch anything inside the app itself — recordings already sitting in its library, your last layout, your filter choice, none of it resets, because this permission gates one outbound action, not the app’s internal state.

Unlike a capture session built at launch from whatever camera and microphone permissions exist at that moment, Save reads the current Photos permission at the moment you tap it, so there is no need to fully quit and relaunch the app afterward the way there is for camera access. Grant it in Settings, come back, and Save works on the next tap.