Photos & Camera

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Explore technical aspects of capturing high-quality photos and videos, including exposure control, focus modes, and RAW capture options.

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iOS 26 AVCaptureDevice continuousAutoFocus not working
Device: iPhone 16 Pro Max OS: iOS 26.0.1 AVCaptureDevice.DeviceType: builtInUltraWideCamera avtiveFormat: <AVCaptureDeviceFormat: 0x10ffb9ac0 'vide'/'420v' 1440x1080, { 1- 60 fps}, photo dims:{1440x1080,2016x1512}, fov:101.022, gdc fov:103.625, binned, max zoom:94.50 (upscales @1.40), system zoom range:1.0-3.0, AF System:1, ISO:15.0-3600.0, SS:0.000023-1.000000, system exposure bias range:-2.0-2.0, supports multicam, supports CS RoI, supports Smart Style, supports Smudge Detection> API: device.isFocusModeSupported(.continuousAutoFocus) == true setting: device.focusMode = .continuousAutoFocus setting is ok, but it's not working actually with continuousAutoFocus
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Oct ’25
New API to control front camera orientation like native Camera app on iPhone 17 with iOS 26?
The iPhone 17’s front camera with the new 18MP square sensor and iOS 26’s Center Stage feature can auto-rotate between portrait and landscape like the native iOS Camera app. Is there a Swift or AVFoundation API that allows developers to manually control front camera orientation in the same way the native Camera app does? Or is this auto-rotation strictly handled by the system without public API access?
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190
Oct ’25
Uploading PhotoKit Resources in the Background
The introduction of PHBackgroundResourceUploadExtension is a welcome addition in iOS 26.1. I wonder however, how to attach a debugger and actually get the system to call the process() method of the extension. I tried to run the extension both inside photos app (and also the main app for testing), but when I take a photo or add photos to the library (saving), the process() method does never get called. Any hints would be appreciated to debug the PHBackgroundResourceUploadExtension during development.
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153
Nov ’25
PhotoKit Background Upload Extension not working on iOS 26.2 iPhone 17 Simulator
Hi, I’m trying to implement the new PhotoKit PHBackgroundResourceUploadExtension. I created the extension, enabled full photo library access in the host app, and registered the extension point using the string: com.apple.photos.background-upload. However, when I attempted to enable the extension with: try library.setUploadJobExtensionEnabled(true) I received the following error: Error Domain=PHPhotosErrorDomain Code=-1 "(null)" This happens when running the app on Xcode 26.1 and 26.2 Beta, using the iPhone 17 Pro Max simulator (iOS 26.1 and 26.2). My question is: Is this extension supported on the simulator? I’m asking because at the moment it’s difficult for me to test this on a physical device. Also, What's the meaning of the error? Thanks.
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260
Nov ’25