# Third-party apps unlock finer aperture control on iPhone 18 Pro Moment and Blackmagic bypass iOS limitations with 10-step aperture adjustments - **Source:** [The Verge](https://www.theverge.com) - **Published:** 2026-09-25 - **Original article:** - **On Brifing:** https://brifing.si/s/50494652-01af-4a2a-b88a-e875cbd11db7 ## Native app limitations The iPhone 18 Pro's stock camera app restricts aperture adjustment to just four fixed settings (f/1.48 to f/4) in both manual and auto modes. This constraint exists despite the hardware's capability for more granular control, as revealed by Apple's SDK documentation. Professional photographers often require finer adjustments for precise depth-of-field effects. ## Blackmagic's breakthrough Blackmagic Camera app v3.5 became the first third-party solution to offer 10 aperture presets for iPhone 18 Pro, filling gaps between Apple's limited options. Initial reports noted bugs, but version 3.5.1 quickly addressed stability issues. The free app demonstrates how developers can leverage Apple's SDK for advanced camera controls. ## Moment's premium alternative Moment Pro Camera II ($12.99) now matches Blackmagic's functionality with 1/3-stop increments between f/1.48 and f/4.0. This mirrors professional DSLR interfaces, though the iPhone's small sensor may limit visible differences at minor adjustment levels. The update positions Moment as a paid alternative for serious mobile photographers. ## Technical implementation Both apps access the iPhone's variable aperture hardware through Apple's Camera SDK, proving the four-setting limit is software-imposed. The SDK allows third-party developers to create custom camera interfaces with more professional controls than Apple's consumer-focused default app provides. ## User experience tradeoffs While additional aperture steps offer creative control, practical benefits may be subtle due to physics limitations of smartphone-sized sensors. The difference between 1/3-stop increments becomes more noticeable in specialized scenarios like product photography or portrait work with precise bokeh requirements. ## Professional mobile workflow These updates cater to photographers treating iPhones as serious tools. Features like granular aperture control bridge the gap between smartphone convenience and DSLR functionality. The trend reflects growing demand for pro-grade mobile photography solutions beyond Apple's default offerings. ## Developer opportunities The camera app developments showcase how Apple's SDK enables niche solutions Apple won't build. As smartphone cameras approach professional capabilities, third-party apps can specialize where platform holders focus on mass-market usability, creating a new accessory software category. ## Mobile photography evolution This aperture control development represents another step in smartphone cameras closing the gap with dedicated equipment. While hardware limitations remain, software innovations continue expanding creative possibilities, challenging traditional camera market segments through computational photography advancements. ## Sources covering this story - https://www.theverge.com/tech/1000729/moment-pro-blackmagic-camera-ii-ios-app-iphone-18-pro-max-aperature-camera — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._