Apple iPhone 18 Pro and 18 Pro Max Announced – Variable Aperture Main Camera, New Sensor, Pro Controls, Plus the Foldable iPhone Duo

Smartphone Filmmaking

by Nino LeitnerSeptember 9^th, 2026

Subscribe to News - Cameras

So here it is, the iPhone 18 Pro, and for once the camera headline is mechanical rather than computational. Apple has put a real six-blade variable aperture into the 48MP Fusion Main camera, running from f/1.48 to f/4.0, paired it with a new sensor that Apple says delivers around 50 percent better low-light performance, and added a Pro controls layer to the Camera app that finally lets you dial in aperture, shutter and white balance without a third-party app. ProRes RAW, Apple Log 2, genlock and 4K120 all carry over, there is a signed-pixel authenticity feature called Apple Reference Image, and a foldable sibling called iPhone Duo shares the main sensor but drops most of the pro video stack. Let me walk you through what matters for filmmakers.

Both the iPhone 18 Pro and iPhone 18 Pro Max get the same 48MP Pro Fusion camera system: a new 48MP Fusion Main with a six-blade variable aperture offering f/1.48, f/1.8, f/2.8 and f/4.0 and second-generation sensor-shift OIS, a 48MP Fusion Ultra Wide, and a 48MP Fusion Telephoto with 3D sensor-shift OIS covering 0.5x, 1x, 2x, 4x and 8x optical zoom options. Video runs to 4K Dolby Vision at 120 fps on the main camera and 60 fps on the ultra wide and telephoto, with ProRes up to 4K120 to an external drive, ProRes RAW, Apple Log 2, ACES and genlock support, plus a four-mic array. Pro controls add manual aperture, shutter speed and white balance adjustment and a histogram inside the stock Camera app, and an aperture API is open to developers. All of that sits on the A20 Pro, built on a 2-nanometer process with a Dual 16-core Neural Engine, in a 6.3-inch / 211g and a 6.9-inch / 249g body, in black, silver, glacier and burgundy with 256GB, 512GB, 1TB and 2TB storage.

A mechanical iris in a phone

Every iPhone main camera from the iPhone 14 Pro through the iPhone 17 Pro has shot wide open at a fixed f/1.78, with exposure handled entirely by shutter speed, ISO and whatever the pipeline decided to do afterwards. That is fine for stills and a constant headache for video, where you want to hold your shutter at 180 degrees and have no ND filter to fall back on. Apple’s answer is a six-blade iris with four positions: f/1.48, f/1.8, f/2.8 and f/4.0. Apple’s product page claims around 50 percent better low-light performance at the f/1.48 setting, which is roughly what you would expect from opening up about half a stop over last year’s f/1.78, and the f/4.0 end is what delivers the “crisper detail in the back of group photos” the press release talks about.

Two things to keep in mind before you throw away your VND. The full range is a little under three stops, so on a bright exterior at a 180-degree shutter you will still need filtration; f/4.0 is not enough on its own. And four positions is not a continuous ring. The steps are close to a full stop apart from f/1.8 upwards, and I would not expect a smooth, invisible aperture pull mid-shot from a four-step mechanism. Where it does help is the ISO you land on: being able to stop down two or three stops instead of cranking shutter speed or relying on the phone’s processing to tame highlights is a real change in how you expose. The developer API is the more interesting part for our readers, because Apple says developers get access “across the aperture range”, which suggests the Blackmagic Camera app and similar tools might get finer control than the four stock presets. That is my reading, not Apple’s statement.

DJI got here first in the small-sensor world, and we covered the Osmo Action 6 with its f/2.0 to f/4.0 iris last November. Samsung tried a two-position iris on the Galaxy S9 in 2018 and dropped it two generations later, and Huawei and Xiaomi have shipped stepped and stepless versions on recent flagships, so the mechanism is not new; Apple’s adoption of it is. Apple being late to a feature is nothing new; Apple being late and then doing it properly is the usual pattern, and whether that holds here depends on how the blades behave in video.

How much better is low light, really?

Apple’s product page puts a number on it: around 50 percent better low-light performance at f/1.48, better-quality Night mode photos captured faster, and “improved low-light video” listed on the spec sheet. That 50 percent figure deserves a moment with a calculator. Last year’s main camera was fixed at f/1.78; opening up to f/1.48 lets in (1.78 / 1.48) squared, or about 1.45 times the light, which is roughly 45 percent, or a little over half a stop. In other words, Apple’s headline low-light claim is almost entirely the aperture doing the work, not the sensor. That is not a criticism, half a stop is half a stop, but it means the “new sensor that improves image quality” line in the press release is not backed by any separate low-light number.

Two hints suggest there is more to it than the iris. The compare page lists “improved low-light video” for the iPhone Duo as well, and the Duo has a fixed aperture, so some of the gain must be coming from the sensor or the processing pipeline. And the Night mode claim is about speed, which is a pipeline and sensor read-out story rather than an aperture one. What Apple has not given us is a base ISO, a pixel pitch, a read noise figure, or anything that would let us separate the three contributions. Half a stop of aperture is easy to believe; how much cleaner the sensor itself is at ISO 3200 in Log 2 is the question nobody can answer from the spec sheet, and given what the 17 Pro did to our lab charts, I would want to see it on a waveform before believing any number.

The new sensor, and the pipeline question

Apple pairs the iris with what it only calls “a new sensor that improves image quality” and a new computational imaging pipeline. No pixel size, no read-out figures, no dynamic range claim, only the 50 percent low-light figure tied to the wider aperture. For a company that is now shipping a sensor able to cryptographically sign every pixel (more on that below), the silence on imaging fundamentals is notable.

This matters because of what Gunther and Florian ran into in our lab with the previous generation. Our iPhone 17 Pro Lab Test, published just this week, had to be abandoned as a standard test: even in the Blackmagic Camera app with manual shutter, manual ISO, locked white balance, ProRes RAW and Apple Log 2, the waveform shifted by roughly three stops depending on where you tapped to focus. Rolling shutter was excellent (under 3ms on the 24mm camera) and we saw around 11 to 12 stops above the noise floor, but the phone simply would not behave as a deterministic imaging device. Nothing in today’s announcement addresses that. A “new computational imaging pipeline” could mean the scene-dependent processing is more predictable, or it could mean there is more of it. We will for sure do our best to try and find out in testing.

Pro controls and the video feature list

The most practical addition for working shooters is Pro controls, a customizable panel in the Camera app for the 18 Pro models that gives access to lens aperture, shutter speed and white balance, plus a histogram for checking exposure across the frame. This is the kind of thing Apple has left to third-party apps for over a decade, and I suspect the variable aperture is what finally forced their hand: you cannot ship a manual iris and then hide it behind an auto mode.

The professional video stack that arrived with last year’s iPhone 17 Pro, namely ProRes RAW, Apple Log 2, ACES support and genlock via the Blackmagic Camera ProDock, carries over intact. Apple’s spec sheet lists ProRes recording up to 4K at 120 fps with external recording, ProRes RAW, Academy Color Encoding System, Apple Log 2 and genlock support for both 18 Pro models. None of that is mentioned in the press release, which is a marketing choice rather than a product one; the aperture is the story Apple wants to tell this year, and the codec and sync features are now simply expected. The front camera also records ProRes up to 4K60 externally.

Cinematic Mode can now applied to videos after shooting

Frame rates are unchanged: 4K Dolby Vision up to 120 fps on the main camera, up to 60 fps on the ultra wide and telephoto, Cinematic mode up to 4K60, Dual Capture front-and-back up to 4K30, and slow motion at 1080p240 or 4K120 from the main sensor. What is new on the software side is modest: Cinematic effects can be applied after capture to clips shot at up to 60 fps, Time-lapse gains 4K Dolby Vision HDR, Audio Mix has new voice algorithms and a music isolation option, and Photographic Styles 3 adds texture and grain controls.

The rest of the camera array

The telephoto keeps the 48MP Fusion sensor with 3D sensor-shift OIS that Apple introduced on the 17 Pro, giving 4x and 8x optical zoom options at the long end, and the main camera moves to what Apple calls second-generation sensor-shift OIS. The ultra wide is also a 48MP Fusion unit. Spatial video at 1080p30, ProRAW stills, macro on the ultra wide and a LiDAR scanner all remain, and the four-mic array Apple calls “studio-quality” is Pro-only.

Storage tops out at 2TB, which at 4K120 ProRes bitrates matters less than it sounds because that mode requires an external drive anyway. The USB-C port is USB 3 at 10Gb/s, unchanged. If you want the shorthand: the imaging hardware outside the main camera is last year’s, and the main camera is where the money went.

Apple Reference Image and the authenticity angle

The most original idea in this launch is Apple Reference Image. The main camera’s new sensor can sign the data it captures, and when you shoot in the opt-in Reference mode, that signed sensor data goes to Private Cloud Compute, which develops it into an unalterable reference image. It sits in the Photos app next to the finished picture like a digital negative, so anyone can compare the two and see what was edited. APIs in iOS, iPadOS and macOS 27 let third-party apps display these reference images, and Apple says support for the SynthID watermark standard for AI-generated or AI-edited images is coming in a later software update. The feature is limited to the Fusion Main camera.

For photojournalists and documentary shooters this is a serious feature, arguably more consequential than the iris. Two caveats from the fine print, though. Reference Image capture will not be available at launch on iPhone 18 Pro models in the EU (viewing and developing reference images on iOS 27 will work), and the feature is not available at launch in China. That EU restriction is a real limitation for a large chunk of our readership, and Apple’s release offers no timeline for lifting it. (Apple, if you are reading this: a provenance feature that skips Europe is a strange choice for a company that talks about photojournalism.)

Where the foldable fits, and what it lacks

iPhone Duo, Apple’s first foldable, uses the same A20 Pro and a 48MP Dual Fusion camera system: a 48MP Fusion Main with a fixed aperture and first-generation sensor-shift OIS plus a 2x optical-quality crop, and the same 48MP Fusion Ultra Wide as the Pro models. There is no telephoto, so zoom options stop at 2x, and the front camera is a 12MP Center Stage unit rather than the Pro’s 18MP. It records 4K120 Dolby Vision on the main camera and supports the same post-capture Cinematic effects and Audio Mix updates, and a FaceTime camera hides beneath the 7.6-inch inner display.

What the Duo does not get is the professional stack. Apple’s compare page shows no variable aperture, no Pro controls, no ProRes, no ProRes RAW, no Apple Log 2, no ACES, no genlock, no Apple Reference Image, no ProRAW and no LiDAR on the foldable. For our readers that puts it firmly in the consumer camp regardless of the shared main sensor. What the folding design adds instead is a set of dual-screen camera modes: Duo Preview puts a live feed on the outer 5.4-inch display so your subject can see their own framing, and rear-camera selfies get the same treatment. A self-standing phone with a client-facing monitor built in is a neat trick for interview work, but at $1,999 with no log recording it is not a filmmaking tool. Pre-orders open October 16 with availability from October 23.

Performance, thermals and battery

The A20 Pro is built on a 2-nanometer process, with 50 percent more memory bandwidth than the A19 Pro, a 6-core CPU with two performance and four efficiency cores, a 7-core GPU that Apple claims is up to 40 percent faster, and a Dual 16-core Neural Engine with 32 total cores for computational photography and on-device AI. The chip packaging is borrowed from Apple’s M-series designs, placing memory beside the die rather than on top of it so the silicon can couple directly to a new vapor chamber with three times the surface area of the one in the iPhone 17 Pro. Apple claims up to a 40 percent sustained performance gain over the previous generation.

Sustained performance is the number that matters when you are recording long ProRes clips in the sun, so if the thermal claim holds it is quietly one of the more useful upgrades for video. Battery follows the same logic: Apple quotes up to 36 hours of video playback on the 18 Pro and up to 45 hours on the 18 Pro Max, with wired charging to 50 percent in around 15 minutes. All of these figures are Apple’s, measured on preproduction units.

Pricing and availability

The iPhone 18 Pro starts at $1,199 for 256GB, rising to $1,399 for 512GB, $1,799 for 1TB and $2,399 for 2TB. The iPhone 18 Pro Max runs $1,299, $1,499, $1,899 and $2,499 across the same four capacities. Both come in black, silver, glacier and burgundy. Pre-orders open Saturday, September 12, with availability from Friday, September 18 in more than 65 countries, and a further 20 markets follow on September 25. iOS 27 arrives as a free update on September 14. Full details are on Apple’s newsroom and the iPhone compare page.

Does a four-position variable aperture change how you would use an iPhone on a shoot, or is the real story here Apple Reference Image? Let me know what you think in the comments below.