General Improvements to the iPhone 17's Cameras
👉 What does Photonic Engine mean?
It’s Apple’s term for its advanced image processing system (introduced with the iPhone 14 Pro). It combines the power of neural engineering in the A19 chip, the camera hardware, and the ISP (Image Signal Processor). Similar to how HDR works, the iPhone captures multiple frames and then merges them into a single image during the processing stage. This is the role of the Photonic Engine. What hasn’t changed with this year’s built-in lenses is the lens coating, so unfortunately, lens flaring is still present.
Although it’s not an upgrade to the built-in cameras, it’s worth mentioning that the display now reaches 3000 nits of brightness, and the phone itself features a vapor chamber cooling system. Thanks to this, the screen remains clearly visible even in bright sunlight, and the device can maintain its performance level even in extremely hot conditions. In other words — if you’re shooting video or photos in strong summer sunlight, Apple won’t limit the screen brightness, and the phone’s performance won’t throttle either.
👉 0.5x Ultra Wide built-in lens:
Basically, the iPhone 17 Pro and Pro Max use the same sensor and built-in lens as last year’s iPhone 16 Pro and Pro Max, but there’s one very important improvement. With last year’s 48-megapixel sensor, we could only take full advantage of it when shooting in ProRAW format; if we chose HEIF or JPG, the photos were limited to 12 megapixels. However, this year, with the iPhone 17 Pro and Pro Max, the 0.5x Ultra-Wide lens can capture 24-megapixel photos even in JPG and HEIF formats.
👉 1x main wide built-in lens:
This built-in camera hasn’t changed physically at all. It features the same sensor, field of view, and coating. That may be bad news for those who were expecting major changes, but it’s good news for anyone using Moment lenses, because it means the T-series Moment lenses work perfectly with the built-in 1x wide lens.
👉 4x Telephoto lens
This camera received the biggest change this year. Apple switched from the 5x optical zoom found in the iPhone 16 Pro and Pro Max to a 4x optical zoom, and it now features a 48-megapixel sensor that delivers much more detailed images. Using the 4x optical zoom, you end up with about a 100mm equivalent focal length.
According to early tests, if you zoom in 5x with the 4x telephoto lens of the iPhone 17 Pro or Pro Max, you actually get better results than with the 5x built-in lens of last year’s iPhone 16 Pro or Pro Max, meaning that even with digital zoom, the results are superior.
This is not only because the telephoto lens now has more megapixels, but also because the sensor size has increased by 56% this year. As a result, it can capture a better dynamic range and store significantly more data in each image, and its low-light performance has also improved substantially thanks to the larger sensor.
Another change is that the minimal focal distance of the 4x telephoto camera is slightly better than last year’s 5x. However, it’s essential to note that if you move closer and cross the minimum focus distance threshold, you can only capture 12-megapixel photos instead of 48 megapixels, most likely because in those cases, the native camera app crops into the 4x sensor.
Let’s talk about the other most important change: the 8x zoom. Apple used a very catchy term for it: “optical quality zoom.” It sounds great, but in reality, this is just a digital zoom option. In this case, the system essentially crops into the 48-megapixel sensor to achieve that field of view. According to early reviewer tests, the phone can still produce extremely good quality in this way. Apple claims to’ve refined the so-called pixel binning technology this year, and thanks to the faster chip, performance has improved even further. With the 8x zoom, you can reach a 200mm field of view.
However, there’s one important detail worth mentioning: in most cases, Apple applies heavy post-sharpening to the images in order to mask the shortcomings of digital zoom. This, however, results in an overly sharpened image that looks, so to speak, “too digital.” No matter how clever Apple’s engineers are, they can’t defy physics; a digital crop will never replace the quality of a real lens with multiple glass elements. Not to mention, every lens has its own unique character, whereas digital zoom has none.
So, to summarize: the 4x is the optical zoom, and the 8x is the digital zoom. Additionally, there is a 2x zoom, which is also a digital zoom and not an actual physical telephoto lens. Beyond that, several other digital focal length simulations are available, which are also made possible by pixel binning, essentially simulating different focal lengths. I know this can be confusing, so let’s break it down and see which fields of view we actually get, and which ones are digital versus actual lenses.
- Macro - it’s a digital crop, using the 0.5x Ultra-Wide lens
- 13mm - it’s an actual lens, the 0.5x Ultra-Wide lens
- 24mm - it’s an actual lens, the 1x main Wide lens
- 28mm - it’s a digital crop, using the 1x main Wide lens
- 35mm - it’s a digital crop, using the 1x main Wide lens
- 48mm - it’s a digital crop, using the 1x main Wide lens
- 100mm - it’s an actual lens, using the 4x Telephoto lens
- 200mm - it’s a digital crop, using the 1x main Wide lens
The standard iPhone 17 comes with a 0.5x telephoto camera and a 1x wide-angle camera, which, in theory, means that all the fields of view mentioned above are available, except for the 100mm and 200mm options. (Although Apple hasn’t yet clarified on its website whether the 28mm and 35mm options are also included.)
The iPhone Air, on the other hand, only has a single 1x wide fusion camera, so in theory, the FOVs of 24mm, 28mm, 35mm, and 48mm are available.
👉 Center Stage Front Facing Camera
To everyone’s surprise, this camera also received the biggest changes this year, something that can be extremely useful for most content creators.
According to Apple, the sensor found in the front-facing camera is “almost 2x larger” compared to the one used in the iPhone 16 Pro or Pro Max device. The sensor isn’t rectangular but square, which allows the system to automatically switch between landscape and portrait depending on how people fit into the frame. Put simply, even if you’re holding the camera vertically, you can still capture landscape shots without losing image quality.
(Currently, this feature only works in photo mode, but hopefully a future software update will bring it to video as well.)
In the native camera app, we can enable the system to automatically use this feature depending on the situation, or we can manually decide whether the phone should take a portrait or landscape photo when held vertically.
Another useful feature is that we can now shoot videos in ProRes Log using the front-facing camera. (However, the ProRaw format is not available.)