Comparing the iPhone 18 Pro Max and 17 Pro Max cameras in real-life situations

(Dan Tri) - Two generations of iPhone Pro Max are placed side by side in many conditions, from daylight, against sunlight, indoor lights to low light, close-up and zoom.

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In the article, the camera is tested in two directions to serve different usage needs.

With portrait photos, iPhone 17 Pro Max and 18 Pro Max were placed in the same conditions, taken almost simultaneously using default settings. Images are preserved in color, without post-production, allowing viewers to directly evaluate how each device handles skin tones, lighting and details in a variety of environments.

This year's iPhone 18 Pro Max adds a variable aperture, allowing to change the amount of light entering the camera and create different visual effects (Photo: Tuan Anh)

With landscape photos, iPhone 18 Pro Max is tested in many contexts and has color post-production. The purpose is to evaluate the ability to exploit images from phone cameras when users want to edit more deeply, especially for landscape, architecture or street photography needs.

Test situations range from daylight, backlight, indoor lighting to low light, close-up, long zoom and environments with complex light sources.

The comments in this article are based on actual shooting experience and are for reference only. Image quality also depends on the context, shooting style as well as the perception of each user.

Daylight: The difference lies in the way it is handled

In bright conditions, iPhone 17 Pro Max tends to produce brighter photos. The face, arms and areas in the shadow are brightened quite strongly. This makes the image easier to see but somewhat reduces contrast.

iPhone 18 Pro Max is darker overall. The blacks in the hair and clothes are deeper, the shadow areas are not brightened too much, so the photo has a better sense of depth.

In terms of detail, the difference between the two cameras is not significant when viewing the full frame. Hair, clothing, leaves, and wall surfaces are all well reproduced. Therefore, in bright enough conditions, the most noticeable change is not in sharpness but in the way the two generations handle light and color.

Against the sun: The difficult problem of HDR

When placing the model in a high-contrast context, both cameras still kept the face bright enough.

iPhone 17 Pro Max tends to have warmer and brighter colors. Some areas of the skin receiving direct sunlight on the face and arms are brightly bright, while the background has high contrast.

iPhone 18 Pro Max handles transitions between light and dark areas softer. The skin areas receiving the sun are less harsh, while the hair, costumes and the trees in the background still maintain detail. Blue also has more shades.

However, the gap between the two generations in this situation is not too large.

Indoors under yellow light

The difference is more obvious when moving into artificial light environments.

iPhone 17 Pro Max keeps dark areas quite deep, from hair, lampshades to table tops. The yellow tone of the room is clearly maintained but the model's face is darker.

In contrast, the iPhone 18 Pro Max brightens the whole scene more. Faces, hair, shirts and details on the wall are easier to see, but the camera still retains the warm characteristic of the light source.

Both shoot at ISO 200, but the 18 Pro Max uses a speed of 1/33 second compared to 1/50 second on the 17 Pro Max. This contributes to making the new generation's photos brighter, but also shows that the difference comes from the way the system automatically selects shooting parameters.

How does iPhone 18 Pro Max handle photos in other situations?

At close range, the iPhone 18 Pro Max clearly reproduces small details such as feathers, threads or decorative beads on Mid-Autumn toys. The subject stands out from the background and the blur transition is relatively natural even without using portrait mode.

In night conditions, the telephoto camera can still record small architectural details such as clock hands, shutters and patterns on buildings. However, the sharpening algorithm begins to show more clearly, making some surfaces feel a bit hard when viewed closely.

In more difficult scenes, the camera must increase ISO and decrease shutter speed. The image therefore begins to soften and lose some small details.

With night portraits with flash, the subject is clearly separated from the background while the backlight sources are maintained. However, the flash is quite strong, making the facial skin brighter and more rosy, somewhat reducing the natural color.

From a position where the model only occupies a small part of the main camera's frame, the telephoto camera on the iPhone 18 Pro Max can bring the subject significantly closer.

In bright enough conditions, faces, hair and costumes still have good detail. The lines of the railings, walls and surrounding architecture are also clearly maintained.

However, when observed closely, high-contrast edges such as hair, railings or wall edges show signs of algorithmic enhancement.

Therefore, the most noticeable advantage of the telephoto camera lies in its ability to reach subjects from afar, instead of creating a level of detail equivalent to the main camera.

Underexposure and underexposure

This is an environment that more clearly shows the processing capabilities of the iPhone 18 Pro Max.

In night landscape photos, the camera does not try to turn the scene into daytime. Skies and low-light areas remain dark, while structures, signs, and lights maintain color.

At Hang Ma Street, where many light sources and colors of red, yellow, pink, and blue appear simultaneously, the machine still separates the colors instead of turning them into a light patch. High-intensity white bulbs occasionally create flares or flashes of light, but surrounding detail is largely retained.

When the exposure time was extended to 4 seconds, pedestrian movement became transparent blurs, while static objects retained detail. This is also how users can take advantage of the camera to create motion effects instead of just using night mode to increase brightness.

How does f/1.48 and f/4.0 aperture change a photo?

Variable aperture makes a clear difference when shooting at night.

At f/1.48, the camera captures more light, allowing it to maintain ISO 320 and a speed of 1/25 second. The image is therefore cleaner and retains good shadow detail.

When closing down to f/4.0, the camera must increase ISO to 1600 and reduce speed to 1/19 second to compensate for exposure. In turn, the lights create a clearer starburst effect, providing a different interpretation of the night city scene.

This shows that variable aperture affects more than just depth of field. In low-light environments, it also directly affects the amount of light the camera receives, ISO, shutter speed and how light sources are reproduced.

Conclude

Through real-world testing situations, the iPhone 18 Pro Max shows improvements that focus more on image processing and the ability to adapt to complex lighting environments, instead of creating a big difference in sharpness in all conditions.

In a bright enough environment, the gap with the iPhone 17 Pro Max is not too obvious. Both machines reproduce details well, while the main differences lie in how to handle colors, light and dark areas and contrast. The advantages of the new generation are more evident when shooting in backlight, low light or scenes with many light sources with different intensities.

The telephoto camera on the iPhone 18 Pro Max also maintains good usability when taking long distance and night shots, although the quality decreases when light is low and signs of algorithmic processing become more obvious. Notably, the ability to change aperture opens up more creative space, allowing photographers to actively choose between light capture and visual effects.

Overall, the iPhone 18 Pro Max has not made a huge leap in normal shooting conditions, but gives more room for people who like to take and post-process photos on their phones. The upgrades become more meaningful when the camera is placed in difficult situations or when users want to actively control how the photo is created.