iPhone 7 Plus version of the image.

Bokeh: Overall, the 8 Plus is the highest-performing phone we’ve tested when it comes to bokeh. Despite the relatively small changes in the actual camera specs, additional development and processing power allow it to beat out the 7 Plus by 5 points, putting it even further ahead of the Google Pixel, with a score of 55 compared to 30.

You can see the improved depth effect on the iPhone 8 Plus compared to the older model, showing that the dual-camera system now does a better job of blurring the foreground like a true optical blur, instead of blurring only the background. The images below also show how the second camera of the 8 Plus provides a much more artistic rendering of the image than the single camera on the iPhone 8 (click on individual images to get a full-size version for easier comparison):

Video

Apple continues to up its game on Video. With a score of 89, the 8 Plus has the best video quality of any Apple device, starting with the best exposure calculation. In particular, exposure is more stable while panning or walking than on previous iPhones. Its HDR capabilities are also very good, but highlights are sometimes blown out. There is still room for improvement, as the iPhone 8 Plus’s Video score of 89 still only ties the HTC U11 and is still behind the Google Pixel’s 91 points. This said, the 8 Plus camera does an excellent job of face tracking when shooting video in bright light.

Photo scores explained

Our Overall Photo Score is a composite of a number of category sub-scores. Here we detail how the 8 Plus performed in each of those categories.

Exposure and Contrast (89)

The 8 Plus does an excellent job of accurately calculating exposure, improving on the performance of the iPhone 7 family. Its ability to represent high-contrast scenes is also improved, probably at least in part due to additional processing power and improved software for combining multiple frames into a single image. Apple’s AutoHDR technology is some of the best on the market for rendering high-dynamic-range scenes. The 8 Plus also does an unusually good job at recognizing and properly exposing faces in an image.

Color saturation in iPhone 8 Plus images remains very good, even under low-light conditions. However, in low light and in typical indoor (tungsten) light, 8 Plus images pick up a noticeable color cast that you can see in this chart of test sample patches:

Using the reference patch on the far right, notice that the light gray patch nearly turns peach under very low-light conditions (left-most “H” column, luminosity similar to candlelight).

Autofocus (74)

Although the 8 Plus doesn’t always focus quickly, once it focuses, it is remarkably accurate. In both our long- and short-delay tests, the 8 Plus was able to repeatably capture an in-focus scene. The sometimes longer delay — which occurred periodically in both bright and low light — can mean that users miss the shot they intended.

Even in bright light, the 8 Plus’s  autofocus sometimes hesitated, which can mean missing the shot you want.

Similarly, in our fast trigger tests, the 8 Plus didn’t always refocus right away. However, once the 8 Plus focused, it was on the money. Given a longer interval, the camera focused accurately and quickly every time.

Detail (64)

The 8 Plus does an excellent job of capturing detail under a wide variety of lighting conditions, especially when there is no motion in the scene. That makes it especially good for landscape images. There is a noticeable loss of detail when there is motion, especially in low-light — as you can see in this chart of detail preservation versus light level:

(Our Family score reflects scenes with moving objects, simulating photographing people at events, while the Landscape line is for scenes without subject motion.)

It is easy to forget how far smartphone cameras have come in just a few years. These tight crops of an area in our standard natural test scene demonstrate how much more detail the iPhone 8 Plus captures than previous generations of iPhones:

The images were all taken under very-low light (5 Lux) handheld conditions, showing the improvement in detail preservation and noise suppression in successive iPhone models.

Noise (68)

Similar to its detail score, the 8 Plus features a very low level of noise when capturing static scenes, outperforming every other phone in our database. Even the darkest areas in HDR scenes have very low levels of noise, and blue skies are almost without noise. There is some slight luminance noise indoors and in very low light, but well within acceptable limits. In this indoor test target scene, for example, the 8 Plus is a little further off in exposure than the Google Pixel, but has lower noise:

In very low light, the Pixel does a slightly better job of properly exposing the image (only a small cropped area shown here), but has visible color noise compared to the iPhone 8 Plus (iPhone 8 Plus image crops are on the top row, Google Pixel on the bottom).

This next comparison image is another that shows how quickly smartphone camera technology is advancing. This image was shot with the iPhone 7 Plus and the 8 Plus, both in Portrait mode. The newer model does a much better job of suppressing noise, especially on the model’s face:

Zoom (51)

The iPhone 8 Plus sets a new standard for zoom performance in a smartphone, a tribute to its dual camera design, and the image processing improvements Apple has made since the introduction of the 7 Plus. There is still some room for improvement: when shooting several images in a row using zoom, some (but not all) images show artifacts.

Even with the 8 Plus’s stunning Zoom and Portrait mode performance, photographers still need to watch out for possible side effects. For example, these images show that subject motion can detract from an otherwise excellent portrait:

Bokeh (55)

The bokeh effect on the 8 Plus is remarkably reliable, as the 8 Plus is not fooled nearly as often as other smartphone cameras when it makes estimations of depth, even compared to competitors with similar dual-camera systems.

In low light, the iPhone 8 Plus does a much better job of rendering a bokeh effect than the Google Pixel, although at the cost of some noise. Further, the Pixel version of the image has strong artifacts (click on individual images to get a full-size version for easier comparison):

Key to the 8 Plus’s excellent Bokeh score is very good depth estimation and facial recognition. These technologies help ensure that blurs are created naturally and effectively. There is room for improvement, though — in particular, when the subject touches the edges of the frame, the camera can mistake portions of the subject for part of the background, and ends up blurring those portions accordingly.

This type of artifact is visible in the portrait in this review, in which some of the subject’s hair is blurred — an unfortunate and sometimes unpleasant effect on an important part of the portrait.

Video scores explained

The Apple iPhone 8 Plus achieves a total Video score of 89. As with the photo scores, this is calculated from the sub-scores it achieves in a number of categories of tests that help define its overall video capabilities, specifically: Exposure and Contrast (81), Color (87), Autofocus (84), Texture (50), Noise (68), Artifacts (81), and Stabilization (91). Of particular note, stabilization is excellent, color rendering is very accurate, and exposure is greatly improved over previous models. Exceptionally good face tracking also aids in accurate subject exposure. Video suffers from some judder, and a small amount of frame-rate inaccuracy.

One thing the iPhone 8 Plus’s video lacks somewhat is good exposure in low light. As light falls off, the 8 Plus tends to underexpose, as you can see from this chart:

Ideally, the gray patch should expose to about 50. The 8 Plus comes close in bright light, but at low-light levels, it chooses a very dark exposure.

Conclusion: The best smartphone camera we’ve ever tested

Overall, the Apple iPhone 8 Plus is an excellent choice for the needs of nearly every smartphone photographer. It features outstanding image quality, zoom for those needing to get closer to their subjects, and an industry-leading Portrait mode for artistic efforts. It is at the top of our scoring charts in nearly every category — and in particular, its advanced software allows it to do an amazing job of capturing high-dynamic range scenes and images in which it can recognize faces.

We look forward to testing the iPhone X and comparing it against the iPhone 8 Plus, as the X’s wider aperture and its OIS on both cameras should place it on the cutting edge of zoom and portrait performance — enhancing the iPhone shooting experience for memory makers and image lovers even more. 

A note about image formats for this review: The iPhone 8 and 8 Plus record photographs in the DCI-P3 colorspace, which their displays also use. DCI-P3 is newer and larger than the sRGB color space that most devices use and most web browsers assume. So to ensure that the images we used in the review display properly on a wide variety of browsers and devices, we converted the originals from DCI-P3 to sRGB using Photoshop (which is why the published test photos show Photoshop as the creator). This can slightly reduce the richness of color in some cases from what you would see when viewing the original images on a DCI-P3-calibrated display with appropriate software. We also captured the original images using the new HEIF (High-Efficiency Image Format), but then converted them to very high-quality JPEGs for viewing in standard browsers and image editing software. (HEIF is very similar to JPEG, but provides better compression for similar image quality, so the conversion makes the sample image file sizes larger than they were when shot.) Please note, however, that unlike our test images, some of the comparison photos used in this review were shot in JPEG and used as-is for illustrative purposes, and were not used to compute scores.