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iPhone 18 Pro adds variable aperture, A20 Pro, and longer battery life
iPhone 18 Pro arrives with Apple concentrating its biggest changes in three areas: camera control, sustained performance, and battery life. The new Pro models retain familiar 6.3-inch and 6.9-inch display sizes, but introduce a variable-aperture main camera, the 2-nanometer A20 Pro chip, redesigned thermal hardware, and a smaller Dynamic Island.
The lineup consists of iPhone 18 Pro and iPhone 18 Pro Max, starting at $1,199 and $1,299 in the U.S., respectively. Both begin with 256GB of storage and are available in black, silver, glacier, and a new burgundy finish. Preorders opened September 12, with retail availability beginning September 18 in more than 65 countries and regions.
Rather than treating the Pro models as a cosmetic update, Apple has focused on changes that become more noticeable during demanding use, particularly photography, video work, gaming, AI processing, and long sessions away from a charger.
iPhone 18 Pro brings variable aperture to the main camera
The centerpiece is a new 48MP Fusion Main camera with a physical variable aperture, a first for the iPhone.
Six laser-cut aperture blades can adjust the amount of light reaching the sensor while also changing depth of field. The camera supports four aperture settings: ƒ/1.48, ƒ/1.8, ƒ/2.8, and ƒ/4.0.
At the wider end, the camera can gather more light in darker scenes. A narrower aperture can keep more people or background detail in focus, giving photographers another tool beyond computational depth effects and Portrait mode.
Apple also gives users direct access to those settings through new Pro controls in the Camera app. Aperture, shutter speed, and white balance can be adjusted manually, while a histogram provides a more conventional way to monitor exposure.
The feature is paired with a new main-camera sensor and updated computational imaging pipeline. Apple says the combination improves low-light performance and detail, while Photographic Styles gain texture and grain controls for additional control over an image’s appearance.
Video receives several additions as well. Cinematic effects can now be applied after recording to footage captured at up to 60 frames per second, while Time-lapse can record in 4K with Dolby Vision HDR. Audio Mix has also been updated with improved voice processing and the ability to isolate music.
For photographers who want more evidence of how an image originated, Apple is introducing Apple Reference Image. In Reference mode, the main camera signs sensor data, which Private Cloud Compute uses to create an unalterable reference version that can be compared with an edited image in Photos. Apple is also preparing support for the SynthID standard as another way of identifying AI-generated or altered content.
iPhone 18 Pro uses A20 Pro and a redesigned vapor chamber
A20 Pro is built using a 2-nanometer manufacturing process and contains a six-core CPU, seven-core GPU, and dual 16-core Neural Engine.
Apple says memory bandwidth is 50% higher than on A19 Pro, while GPU performance can be up to 40% faster. The Neural Engine provides 32 cores in total, doubling the AI processing capability of the previous Pro chip.
The silicon change is closely tied to a redesigned cooling system. Apple has rearranged the chip package so that the silicon die sits beside the memory rather than beneath it in the thermal path, allowing A20 Pro to connect more directly to a next-generation vapor chamber.
That vapor chamber has three times the surface area of the previous generation and uses new materials to move heat away from the processor more effectively. Apple claims the design can deliver up to a 40% gain in sustained performance compared with iPhone 17 Pro.
That distinction is more relevant than peak benchmark numbers for workloads such as extended gaming sessions, video editing, computational photography, and local AI models, where heat can force a phone to reduce performance over time.
Connectivity has also moved further toward Apple-designed silicon. The N1 wireless chip supports Wi-Fi 7, Bluetooth 6, and Thread, while the new C2 modem succeeds C1X. Apple says C2 uses 15% less energy while offering faster uploads and adds mmWave support in the U.S.
iPhone 18 Pro Max reaches 45 hours of video playback
Battery improvements are another major part of the new hardware.
Apple rates eSIM-only versions of iPhone 18 Pro for up to 36 hours of video playback, while iPhone 18 Pro Max reaches as much as 45 hours. Apple says Pro Max receives the largest battery-life increase ever delivered in an iPhone.
Some of that gain comes from using the space previously occupied by a physical SIM tray. In markets receiving eSIM-only models, including the U.S., Canada, Japan, Mexico, Saudi Arabia, and the UAE, the larger internal battery provides an additional two hours of rated video playback.
Charging has accelerated as well. iPhone 18 Pro can reach 50% charge in approximately 15 minutes using a supported wired setup, while wireless charging reaches 50% in around 30 minutes. Apple says five minutes of wired charging on iPhone 18 Pro Max can provide roughly seven hours of video playback.
Both devices use aluminum unibody construction with Ceramic Shield 2 on the front and Ceramic Shield on the back. Storage options run from 256GB through 2TB.
The iPhone 18 Pro weighs 211 grams, while iPhone 18 Pro Max weighs 249 grams. Display sizes remain 6.3 inches and 6.9 inches, respectively.
iOS 27 brings Siri AI and new Apple Intelligence tools
The hardware launches alongside iOS 27, which places Apple Intelligence and the new Siri AI more prominently across the system.
Siri AI can use personal context from information stored across apps, respond to onscreen content, perform actions in supported apps, and handle more open-ended questions. A new Siri mode in Camera lets users ask questions and take action based on objects or information visible through the viewfinder.
Photo tools include Spatial Reframing, Extend, and an upgraded Clean Up feature, while Safari can monitor selected webpages for changes such as a product restock or price adjustment.
The Dynamic Island has also been physically reduced and redesigned. It can display up to three Live Activities simultaneously while continuing to support Face ID.
Apple released iOS 27 on September 14, while Siri AI is rolling out initially as a beta in English, with additional language support planned. iPhone 18 Pro and iPhone 18 Pro Max reach stores September 18, giving Apple a Pro lineup whose most substantial additions are less about a new exterior shape and more about physical camera control, heat management, and how long the hardware can sustain demanding workloads.
The post iPhone 18 Pro adds variable aperture, A20 Pro, and longer battery life appeared first on AppleMagazine.
