
Apple has done something to the iPhone 18 Pro that it has never done to an iPhone camera before. It has put a real, moving aperture inside it. Every iPhone camera up to this point had one fixed aperture. This is the first that can change it while you shoot.
That is a hardware change, not a software one, and hardware changes on a phone camera are rare enough to be worth stopping on. Apple has also rebuilt the cooling, jumped the battery figures a long way, and shipped the whole thing alongside iOS 27 and a new Siri that is still in beta.
I have been shooting with both the 18 Pro and the 18 Pro Max since returning from a briefing in Cupertino where I filmed a jazz set in a very dark room a fair bit of walking around my neighbourhood. Here is what the variable aperture actually does, what the cooling is worth, and who should be spending the money.


iPhone 18 Pro specifications and price
| Display | 6.3-inch (Pro) and 6.9-inch (Pro Max) Super Retina XDR, ProMotion up to 120Hz, Always-On |
| Peak brightness | 3000 nits outdoor peak |
| Build | Aluminium unibody, Ceramic Shield 2 front, Ceramic Shield back |
| Main camera | 48MP Fusion with variable aperture, f/1.48 to f/4, six laser-cut blades |
| Ultra wide camera | 48MP Fusion, fixed aperture |
| Telephoto camera | 48MP Fusion with tetra-prism design, 4x and 8x, up to 8x optical-quality zoom |
| Front camera | 18MP Center Stage with square sensor |
| Video | Cinematic effects applied after capture up to 60fps, 4K Dolby Vision time-lapse, Audio Mix with music isolation |
| Chip | A20 Pro, 2-nanometre, 6-core CPU, 7-core GPU, dual 16-core Neural Engine |
| Cooling | Next-generation vapour chamber with three times the surface area of the iPhone 17 Pro |
| Wireless | N1 chip with Wi-Fi 7, Bluetooth 6 and Thread, C2 cellular modem |
| Battery | Up to 34 hours video playback (Pro), up to 43 hours (Pro Max) |
| Charging | Pro to 50 per cent in around 15 minutes wired, Pro Max five minutes for around seven hours of video playback |
| Storage and finishes | 256GB, 512GB, 1TB and 2TB in black, silver, glacier and burgundy |
| Operating system | iOS 27 |
| Price (RRP) | From A$2,099 (iPhone 18 Pro), from A$2,299 (iPhone 18 Pro Max) |
| Availability | Pre-orders from 12 September 2026, on sale 18 September 2026 |
Design and build
I had both the Pro and the Pro Max in burgundy and in black, and the burgundy is the one I would buy. It is subtle rather than loud, and it reads as sumptuous and rich in a way that phone colours usually do not. The black is very black, the darkest Apple has used on the Pro line, but it still has a nice sheen to it rather than going flat.
The glass panel on the back is a separate piece to the aluminium, but it is integrated cleanly enough that it reads as one surface rather than two parts bolted together. The camera bump is sculpted rather than stepped, and the lens rings match the body colour, which is a small thing that makes a big difference to how deliberate the whole back looks. The Apple logo is shiny against the matte finish, so it catches the light on its own.

The enclosure is an aluminium unibody in a 7000 series alloy rather than the titanium of the iPhone 16 Pro – which I really liked. The front is Ceramic Shield 2, which Apple says is three times more scratch resistant, and the back is Ceramic Shield with four times more resistance to cracks.
Screen and Dynamic Island
The Dynamic Island is a welcome change. It is smaller, and it now supports three different app activities at once rather than two, which matters more than it sounds if you are the sort of person who has a timer, a flight and a rideshare all running together.

At the briefing in Cupertino, Apple had a microscope set up so we could look at how the infrared camera is now hidden under the glass. As far as I could see, they have used a coarser pixel design, effectively spreading the red, green and blue elements out around the camera so the lens can see through the display.
The screen itself is nice and bright. ProMotion up to 120Hz and the Always-On display carry over unchanged, and both models now peak at 3000 nits outdoors with better anti-reflection.
The camera: what variable aperture actually does
Most people hear variable aperture and think Portrait mode, done properly in hardware. It is closer to the opposite.
Portrait mode creates a shallow depth of field look, which is great for separating the foreground from the background. The hardware change in the 18 Pro goes the other way. The depth of field gets deeper, meaning more of the scene is in focus.


Samsung already tried this. It had a dual aperture that launched with the Galaxy S9 in 2018, switching between f/1.5 and f/2.4. Samsung ran it for a couple of years and then dropped it with the Galaxy S20. The difference is that Samsung’s was really a two position toggle. This is a real iris, with six laser-cut blades, and it comes with a developer API as well, so the benefits of the hardware can be used by apps like Instagram or WhatsApp rather than only in Apple’s own Camera app.

The range runs from f/1.48 to f/4, and wide open it pulls in about 50 per cent more light. It works at every main camera focal length, including the built-in 2x.


Here is the part that trips people up. Shoot the same scene wide open and stopped down and both frames look about equally bright, with maybe a slight colour shift between them. That is the auto exposure equalising them. The difference is not brightness at all. It is what is sharp.



Wide open buys you roughly two and a third stops, which the camera can then spend on a faster shutter. That means sharper subjects when things are moving. Shoot two objects at different distances wide open and the one at the back goes soft. Shoot a car going past wide open and it blurs, then shoot it at f/4 and it is sharp.

The other effect is the sunstar. Six blades give you a six-pointed star on any point light source, and only at f/4. That is one thing software genuinely cannot fake.
Pro controls
All of this happens automatically, but you can drive it yourself in the new Pro controls, and this is a really welcome update to the camera software. You can customise the top tray and put what you want in it, so you get manual aperture, shutter speed and white balance, which is useful because the iPhone does sometimes struggle with white balance. There is a histogram in there too. I would like it to be a bit larger, but you can at least move its position.

The other lenses and Photographic Styles
The ultra wide and the telephoto round out the creative options, but the attention this year is clearly on the main lens. The variable aperture applies up to the 2x, and the ultra wide is still fixed, so none of this applies at 0.5x. Perhaps in a future model we will see it supported across the other lenses.
Photographic Styles are a nice to have rather than a headline. The new texture and grain controls are the addition worth knowing about, and the grain control in particular softens skin in a way that some people will be glad of. There are lots of things to play around with in there.
Video is where it gets more interesting
The stills side is the story Apple is telling, but video is where I think this gets more interesting.
I shot a jazz set with no direct lights and no rig, just the phone, in a genuinely dark room. The phone is pulling light in from that wide open aperture across several frames to hold detail without blurring. Apple has also improved the default 1080p 30 low light capability, which combines frames when the auto frames per second kicks in.

The part I did not expect is the audio. There are four studio-quality mics, and Apple’s new algorithms separate voice and music from background noise. Audio Mix can now isolate music, which is new, and on a live recording the difference between the raw capture and the processed version is not subtle.
Cinematic effects used to need their own mode. Now you shoot normally and apply the effect afterwards in Photos, at up to 60 frames a second, so you can get that sense of depth out of an ordinary recording.
Smart focus tracking is the other one worth knowing. Double tap a subject and it holds focus as they move, or as the camera moves, through the scene. It works even if the subject leaves the frame and comes back, which is the whole point. You do not want it hunting for the background the moment someone steps out of shot.
It is not a cinema camera, and the low light performance does fall apart if you push it far enough. It is very good, but there are still compromises.
Check out our video review to see the more recordings and photos:
Apple Reference Image
Here is a problem that did not really exist five years ago. Anyone can now generate a photograph that looks completely real. Apple has done something about it, and almost nobody is talking about it.
Shoot in the new Reference mode and the sensor itself signs the image at the moment of capture. Private Cloud Compute then develops that signed sensor data into an unalterable reference image, which you can view in Photos alongside the main image. It works like a digital negative. Any modification to the photo can be traced back against the original.

It is worth being precise about what this proves. It proves the sensor saw this. It does not prove the scene was honest. That is still a useful thing to have, particularly for photojournalists.
It is opt-in, and it is not everywhere yet. In China it is not available at launch for regulatory reasons, and in the EU you can view and develop reference images but not capture them on the 18 Pro at launch. Apple also says SynthID support arrives in a software update later this year, which is a separate, cross-platform way of flagging that AI has been applied to an image.
Heat, and why it matters more than the chip
The 18 Pro has a next-generation vapour chamber with three times the surface area of the one in the 17 Pro. At the briefing in Cupertino, Apple had the old chamber on one side and the new one on the other, the same heat load through both, and a thermal camera showing how the heat dispersed. The 18 spreads it across the whole device instead of building a hotspot down the midline.


That matters for the obvious reason, which is that you do not want a phone uncomfortable to hold or sitting hot in your pocket. It also matters for a less obvious reason. Thermals can count for more than a fast chip, because chips get throttled when they get too hot. Any phone can go fast for 30 seconds. Then it heats up and the software slows it down.
Apple claims up to 40 per cent better sustained performance than the 17 Pro, and up to double against the 16 Pro. So I ran the 18 Pro until it stopped being fast, using the 3DMark Wild Life Extreme Stress Test, and put a Samsung Galaxy S26 Ultra through the same test for comparison. Neither got too hot to hold, though the Samsung did feel subjectively a bit warmer.
| Test | iPhone 18 Pro Max | Samsung Galaxy S26 Ultra |
|---|---|---|
| 3DMark Wild Life Extreme, best loop | 7944 | 7253 |
| 3DMark Wild Life Extreme, lowest loop | 5523 | 3682 |
| 3DMark Wild Life Extreme, stability | 69.5% | 50.8% |
| Geekbench 7, single core | 3965 | 3027 |
| Geekbench 7, multi core | 11247 | 10093 |
| Geekbench 7, GPU | Test failed | Not compared |
| Speedometer 3.1 browser benchmark | 65.3 | 47.2 |
The two phones are nine per cent apart at peak and about fifty per cent apart under sustained load. The iPhone held far more of its frame rate as the test went on, which is exactly what the cooling is for.
The Geekbench 7 GPU test failed outright on both models, which is most likely because Geekbench has not updated for this chip yet. I had the phone before release. On the browser side, Speedometer 3.1 put the 18 Pro at 65.3 against 51.7 for the iPhone 17 Pro, which is about 26 per cent ahead.


The chip is the A20 Pro, built on a 2-nanometre process. The headline numbers are a 6-core CPU, a 7-core GPU up to 40 per cent faster than the A19 Pro, a dual 16-core Neural Engine, and 50 per cent more memory bandwidth. The bandwidth is the one that actually shows up in use.
Gaming on the Pro Max with that large screen was a pleasure. I played Genshin Impact at maximum graphics settings and it looked great, with a frame rate that stayed fluid.
Battery and charging
Apple claims up to 34 hours of video playback on the Pro and up to 43 hours on the Pro Max. That is a big bump, and both figures come from Apple rather than from me.
Battery life is genuinely hard to pin down in a review week, because it depends so much on how you use the phone. What I can tell you is that I got two full days out of the Max without needing to plug it in, which is the sort of result that changes how you think about a phone.
On charging, Apple says the Pro goes to 50 per cent in around 15 minutes wired, or 30 minutes wirelessly, and that five minutes of wired charging on the Pro Max gives around seven hours of video playback. I put the Max on a 60W charger for five minutes and got about 17 per cent back.
Connectivity
Connectivity is as you would expect, and the useful part is that Wi-Fi 7 is genuinely there. Both models carry Apple’s N1 wireless chip, which brings Wi-Fi 7, Bluetooth 6 and Thread. The 18 Pro also introduces the C2 cellular modem, which Apple says delivers meaningfully faster uploads than the C1X while using 15 per cent less energy.
iOS 27, Siri AI and the caveats
iOS 27 is out, and the headline is Siri AI. It is in beta, English to start, with French, Japanese, Korean, Portuguese and Spanish coming in October.
The part that has not had enough attention is that the features running in Apple’s cloud have daily limits. Apple has not said what those limits are, beyond that they vary by feature, request complexity and system demand, and it has said that expanded access above them will cost money in future. To be clear about what that means, it is not that Siri AI becomes a paid product. It is that there is an undisclosed free allowance, and going past it will eventually cost.
In the EU, Siri AI is not available on iPhone at launch, along with anything that depends on it.
One practical thing that catches people out. A new iPhone rebuilds its search index from scratch, and that can take days. Apple says the index is device specific, so even a restored phone has to build its own. If your new 18 Pro seems to know nothing about you for the first few days, that is why.
iPhone 18 Pro vs iPhone 17 Pro
| iPhone 17 Pro | iPhone 18 Pro | |
|---|---|---|
| Main camera aperture | Fixed | Variable, f/1.48 to f/4, six laser-cut blades |
| Pro controls in the Camera app | Not available | Manual aperture, shutter speed, white balance and histogram |
| Apple Reference Image | Not available | Reference mode with signed sensor data |
| Chip | A19 Pro | A20 Pro on a 2-nanometre process |
| GPU | A19 Pro | Up to 40 per cent faster than A19 Pro |
| Memory bandwidth | A19 Pro | 50 per cent more than A19 Pro |
| Vapour chamber | Previous generation | Three times the surface area |
| Sustained performance | Baseline | Up to 40 per cent better, per Apple |
| Dynamic Island | Two Live Activities | Smaller, up to three Live Activities |
| Front glass | Ceramic Shield | Ceramic Shield 2, three times more scratch resistant |
| Speedometer 3.1 (measured) | 51.7 | 65.3 |
Who is it for?
There are three answers, depending on what is in your pocket.
If you are on an iPhone 17 Pro, keep it. This is not your year. The 18 Pro is more capable, but it is not a big enough bump. The camera will take better photos, but it is subtle stuff. What it really does is give the camera system more levers to move in hardware. If it is dark, it can open the aperture wider, let more light in, and rely less on ISO or a slower shutter to brighten things up, which is where blur comes from. Left in automatic, it will quietly help your photos. If you are a creative person who wants to adjust these things yourself, that is a different and more exciting proposition.


If you are on an iPhone 15 or 16 Pro, this is the easiest yes I have given in a while. Coming from a 15 Pro, Apple claims up to 50 per cent faster CPU, a faster GPU and up to 11 additional hours of video playback. That is substantial.
If this would be your first Pro, answer four questions for me. Have you ever changed a camera setting manually, on any camera? Do you edit your photos, or post them as shot? Do you shoot video longer than ten minutes at a stretch, or game for more than half an hour? Do you know what a histogram is for?
Four noes and you are paying a premium for hardware you will never trigger. There is a standard iPhone 18 coming, though Apple has not said when. It could be late this year or early next. The iPhone 17 is on shelves now, and it usually gets cheaper once a new Pro lands.
One thing cuts the other way. The battery is the one Pro advantage everybody feels, whatever they shoot and whatever they do on the phone. And if you simply want the best one, that is a fine reason on its own. Just know what you are paying for.
It physically changes the size of the opening in the main camera lens, from f/1.48 to f/4, using six laser-cut blades. Wide open it gathers about 50 per cent more light, which the camera can spend on a faster shutter for sharper moving subjects. Stopped down to f/4 it puts more of the scene in focus and produces a six-pointed sunstar on point lights.
No. It applies to the main camera, including the built-in 2x. The ultra wide is still a fixed aperture, so none of it applies at 0.5x.
The iPhone 18 Pro starts at A$2,099 RRP including GST and the iPhone 18 Pro Max starts at A$2,299 RRP including GST. Both come in 256GB, 512GB, 1TB and 2TB.
For most people, no. The camera improvements are real but subtle in automatic use, and the performance gains show up mainly under sustained load. If you shoot manually and want hardware control over aperture, that is the reason to move.
It is rolling out in beta with iOS 27, in English to start, with more languages in October. It is not available on iPhone in the EU at launch. Features that run in Apple’s cloud have undisclosed daily limits, and Apple says expanded access will be available for a fee in future.
GadgetGuy’s Valens Quinn attended the Apple launch event in Cupertino CA as a guest of Apple Australia.
The post iPhone 18 Pro review: does variable aperture change everything? appeared first on GadgetGuy.



















