Halide Ships First Duo-Specific Update, With Controls Tailored to Each iPhone Duo Pose
Lux Optics has released the first batch of updates to Halide for the iPhone Duo, according to an Engadget report published October 26, 2026. The update adds features for each of the foldable's three poses and is available to Halide Mark III users.
Apple unveiled the iPhone Duo on September 9, 2026, describing a foldable design with dual displays, as Apple's newsroom reported. Pre-orders begin Friday, October 16, according to Apple's newsroom for the Philippines. Halide, the camera app developed by Lux Optics, is therefore one of the first third-party camera apps (those made by companies other than the device maker) to address the phone's folding shape directly.
The most concrete change is control placement. In the fully open and partially open positions, Halide now offers an option to move the camera controls, so the shutter and related controls can sit where the hand already rests when the phone is held in that pose. The partly open pose gets the most distinctive treatment: with Halide running, the iPhone Duo can function as a waist-level viewfinder camera. Anyone who has used a medium-format camera will recognize the geometry, with the subject framed on a screen angled up toward the eye at waist height.
Lux's announcement, titled "Halide for Duo: Electric Boogaluo," describes the release as a major update focused on the iPhone Duo rather than simple compatibility. The distinction matters. A compatibility fix keeps an app from breaking on new hardware, while pose-specific interface work changes how the device is physically operated. Lux has also indicated that further Duo-focused features are in development, so this release should be read as a first batch rather than a finished set.
Halide's existing interface conventions help explain why the fold is a natural fit. Per Halide's own site, a vertical swipe adjusts exposure (overall brightness) and a horizontal swipe adjusts focus, and the app can import RAW files, the unprocessed image files shot on standalone cameras, for rendering. Its typography draws on the etched lettering found on camera bodies and lenses. The Mark III line was most recently updated to version 3.2, with dedicated support for the iPhone 18 Pro, as MacRumors reported on October 1, 2026.
In my view, the waist-level pose is the detail to watch. Hardware makers have tried foldables with several postures in mind, but the software that exploits each posture determines whether the hinge becomes a camera feature or a novelty. A viewfinder held low and away from the face changes the ergonomics of framing, and the control-relocation option acknowledges that a single fixed layout cannot serve all three poses.
The open questions are practical ones. The sources do not say how the pose-specific features behave on the closed-state display, or how they interact with the dual screens in detail. Those answers will be easier to judge once the further Duo features Lux has promised arrive.
The broader context here is that third-party developers are treating the fold as a set of distinct physical configurations, each with its own input model. That approach gives photographers more say over how the device is held and operated.
