Fact check
“Apple's SDK allows third‑party camera apps to implement more granular control of the aperture on the iPhone 18 Pro.”
Reasoning
Primary Apple sources (AVCaptureDevice.setLensPosition docs, WWDC 2025 video, iOS 18 release notes) state that the SDK provides a method to adjust the variable‑aperture lens on iPhone 18 Pro, enabling granular control. Contradictory claims from a newsroom announcement and a forum reply suggest the feature may not be exposed to third‑party apps, but these are less technical than the official API documentation. The weight of the technical documentation supports the claim.
On confidence: Official SDK documentation and WWDC presentation explicitly describe an API for setting lens position on iPhone 18 Pro, but conflicting statements from Apple marketing and forum staff introduce some uncertainty.
Important context
The setLensPosition API is intended for devices with variable‑aperture lenses and is listed for iPhone 18 Pro. Access may be subject to entitlements or specific app categories, which could explain the contradictory statements.
Evidence
Supporting (3)
- Tier 1 — Primary sourceAVCaptureDevice.setLensPosition(_:completionHandler:)
Use this method to set the lens position of a device that supports a variable‑aperture camera, such as iPhone 18 Pro, allowing granular aperture control.
- Tier 1 — Primary sourceWWDC 2025 – Advances in Camera Capture
Engineers demonstrate how third‑party apps can programmatically adjust the variable aperture on iPhone 15 Pro and newer models using the new AVCaptureDevice APIs.
- Tier 1 — Primary sourceiOS 18 Release Notes – Camera Enhancements
Added AVCaptureDevice.setLensPosition API for iPhone 18 Pro, giving developers fine‑grained control over the f‑stop.
Contradicting (2)
- Tier 1 — Primary sourceApple Announces iPhone 18 Pro – New Camera System
The variable‑aperture lens automatically adjusts to lighting conditions; developers cannot manually set the aperture.
- Tier 2 — Independent reportingindependent originDeveloper Forum – Can third‑party apps control iPhone 18 Pro aperture?
Apple staff replied: "The aperture is managed by the system and is not exposed for manual control in third‑party apps."
Limitations
The evidence does not clarify whether any additional permissions, entitlements, or App Store review restrictions limit third‑party use of the API. The contradictory statements indicate possible policy changes or limited availability that are not captured in the documentation excerpts.
- Last verified:
- Sep 26, 2026, 5:22 PM CDT
- Pipeline:
- 0.1.0
- Claim type:
- Factual
Where this claim appeared
These camera apps give you more control over the iPhone 18 Pro’s apertureThe Verge