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BatteryWe put the Google Pixel Fold through our rigorous DXOMARK Camera test suite to measure its performance in photo, video, and zoom quality from an end-user perspective. This article breaks down how the device fared in a variety of tests and several common use cases and is intended to highlight the most important results of our testing with an extract of the captured data.
Overview
Key camera specifications:
- Primary: 48MP sensor, 0.8μm pixels, f/1.7-aperture lens, Dual Pixel PDAF, OIS
- Ultra-wide: 10.8MP sensor, 1.25μm pixels, f/2.2-aperture lens, AF, OIS
- Tele: 10.8MP sensor, 1.22μm pixels, f/3.05-aperture lens, Dual Pixel AF, OIS
Scoring
Sub-scores and attributes included in the calculations of the global score.
Google Pixel Fold
Use cases & Conditions
Use case scores indicate the product performance in specific situations. They are not included in the overall score calculations.
Outdoor
Photos & videos shot in bright light conditions (≥1000 lux)
Indoor
Photos & videos shot in good lighting conditions (≥100lux)
Lowlight
Photos & videos shot in low lighting conditions (<100 lux)
Friends & Family
Portrait and group photo & videos
54th
44th
Pros
- Good exposure in most conditions
- Good dynamic range and neutral white balance in indoor and outdoor photos
- Effective video stabilization
- Fast and accurate autofocus and zero shutter lag ensure quick captures
The Google Pixel Fold delivered an average performance for a device in the Ultra Premium segment in our DXOMARK Camera test, but it has distinguished itself as the best device with a fold or flip form factor that we have tested to date. Its main strength was the autofocus system, which delivered accurate focus most of the time, even in difficult light. Both photos and videos captured with the device featured a wide dynamic range and neutral white balance. In addition, contrast was rendered nicely in HDR conditions, for example in backlit scenes, and exposure was generally good in most situations. The camera also managed to keep noise levels low in bright light and under indoor conditions.
However, noise levels shot up in low light, night shots and in high-contrast scenes. Portrait mode also left room for improvement, with a slightly unpleasant blur gradient and noticeable depth-estimation artifacts. Video clips showed exposure and white balance instabilities in all conditions. Overall, the Google Pixel Fold was most suited to capturing landscape shots in most lighting conditions.
Test summary
About DXOMARK Camera tests: DXOMARK’s Camera evaluations take place in laboratories and in real-world situations using a wide variety of subjects. The scores rely on objective tests for which the results are calculated directly by measurement software on our laboratory setups, and on perceptual tests in which a sophisticated set of metrics allow a panel of image experts to compare aspects of image quality that require human judgment. Testing a smartphone involves a team of engineers and technicians for about a week. Photo, Zoom, and Video quality are scored separately and then combined into an Overall score for comparison among the cameras in different devices. For more information about the DXOMARK Camera protocol, click here. More details on smartphone camera scores are available here. The following section gathers key elements of DXOMARK’s exhaustive tests and analyses. Full performance evaluations are available upon request. Please contact us on how to receive a full report.
Photo
Google Pixel Fold
169
For scoring and analysis, DXOMARK engineers capture and evaluate more than 2,600 test images both in controlled lab environments and in outdoor, indoor and low-light natural scenes, using the camera’s default settings. The photo protocol is designed to take into account the main use cases and is based on typical shooting scenarios, such as portraits, family, and landscape photography. The evaluation is performed by visually inspecting images against a reference of natural scenes, and by running objective measurements on images of charts captured in the lab under different lighting conditions from 1 to 1,000+ lux and color temperatures from 2,300K to 6,500K.
In our tests, the Google Pixel Fold delivered the best still image performance to date for a device with a folding form factor. Our experts liked how exposure was handled in difficult conditions, such as backlit or high-contrast scenes. Thanks to a wide dynamic range, highlight clipping was kept to a minimum. Color rendering and skin tones were pleasant as well, but the device’s highlight was its autofocus. The zero shutter lag allowed for fast capture and focus accuracy was high, even in low light.
On the downside, noise levels in low light, especially on moving subjects, were higher than on other folding phones we have tested. Texture preservation was on a similar level as on the direct competitors.
Exposure
Google Pixel Fold
130
Color
Google Pixel Fold
130
Exposure and color are the key attributes for technically good pictures. For exposure, the main attribute evaluated is the brightness of the main subject through various use cases such as landscape, portrait, or still life. Other factors evaluated are the contrast and the dynamic range, eg. the ability to render visible details in both bright and dark areas of the image. Repeatability is also important because it demonstrates the camera's ability to provide the same rendering when shooting several images of the same scene.
For color, the image quality attributes analyzed are skin-tone rendering, white balance, color shading, and repeatability. For color and skin tone rendering, we penalize unnatural colors but we respect a manufacturer's choice of color signature.
Autofocus
Google Pixel Fold
125
Autofocus tests concentrate on focus accuracy, focus repeatability, shooting time delay, and depth of field. Shooting delay is the difference between the time the user presses the capture button and the time the image is actually taken. It includes focusing speed and the capability of the device to capture images at the right time, what is called 'zero shutter lag' capability. Even if a shallow depth of field can be pleasant for a single subject portrait or close-up shot, it can also be a problem in some specific conditions such as group portraits; Both situations are tested. Focus accuracy is also evaluated in all the real-life images taken, from infinity to close-up objects and in low light to outdoor conditions.
Texture
Google Pixel Fold
124
Texture tests analyze the level of details and the texture of subjects in the images taken in the lab as well as in real-life scenarios. For natural shots, particular attention is paid to the level of details in the bright and dark areas of the image. Objective measurements are performed on chart images taken in various lighting conditions from 1 to 1000 lux and different kinds of dynamic range conditions. The charts used are the proprietary DXOMARK chart (DMC) and the Dead Leaves chart.
Noise
Google Pixel Fold
117
Noise tests analyze various attributes of noise such as intensity, chromaticity, grain, structure on real-life images as well as images of charts taken in the lab. For natural images, particular attention is paid to the noise on faces, landscapes, but also on dark areas and high dynamic range conditions. Noise on moving objects is also evaluated on natural images. Objective measurements are performed on images of charts taken in various conditions from 1 to 1000 lux and different kinds of dynamic range conditions. The chart used is the Dead Leaves chart and the standardized measurement such as Visual Noise derived from ISO 15739.
Artifacts
Google Pixel Fold
82
The artifacts evaluation looks at lens shading, chromatic aberrations, geometrical distortion, edges ringing, halos, ghosting, quantization, unexpected color hue shifts, among others type of possible unnatural effects on photos. The more severe and the more frequent the artifact, the higher the point deduction on the score. The main artifacts observed and corresponding point loss are listed below.
Preview
Google Pixel Fold
93
Preview tests analyze the image quality of the camera app's preview of the image, with particular attention paid to the difference between the capture and the preview, especially regarding dynamic range and the application of the bokeh effect. Also evaluated is the smoothness of the exposure, color and focus adaptation when zooming from the minimal to the maximal zoom factor available. The preview frame rate is measured using the LED Universal Timer.
Zoom
Google Pixel Fold
164
DXOMARK engineers capture and evaluate over 400 test images in controlled lab environments and in outdoor, indoor, and low-light natural scenes, using the camera’s default settings and pinch zoom at various zoom factors from ultra wide to very long-range zoom. The evaluation is performed by visually inspecting the images against a reference of natural scenes, and by running objective measurements of chart mages captured in the lab under different conditions from 20 to 1000 lux and color temperatures from 2300K to 6500K.
The Google Pixel Fold has the best zoom among all fold or flip shape devices that we have tested. Indeed, a high quality zoom requires various dedicated cameras, which can lead to component clutter. But the Google Pixel Fold managed to overcome the limitations of its form factor with a well-performing zoom. Thus, the tele camera offered good texture preservation at medium and long range. Color rendering was pleasant and exposure was good. However, with a minimal equivalent focal length of 16 mm, the Google Pixel Fold’s ultra-wide camera’s field of view was fairly narrow when compared to the best-in-class devices, but on a similar level as other folding phones. Still, the Google Pixel Fold is a great foldable device for photographers who prefer to zoom in, rather than zoom out.
Wide
Google Pixel Fold
122
These tests analyze the performance of the ultra-wide camera at several focal lengths from 12 mm to 20 mm. All image quality attributes are evaluated, with particular attention paid to such artifacts as chromatic aberrations, lens softness, and distortion. Pictures below are an extract of tested scenes.
Tele
Google Pixel Fold
120
All image quality attributes are evaluated at focal lengths from approximately 40 mm to 300 mm, with particular attention paid to texture and detail. The score is derived from a number of objective measurements in the lab and perceptual analysis of real-life images.
Video
Google Pixel Fold
159
DXOMARK engineers capture and evaluate more than 2.5 hours of video in controlled lab environments and in natural low-light, indoor and outdoor scenes, using the camera’s default settings. The evaluation consists of visually inspecting natural videos taken in various conditions and running objective measurements on videos of charts recorded in the lab under different conditions from 1 to 1000+ lux and color temperatures from 2,300K to 6,500K.
In video mode, the Google Pixel Fold was tested at 4K resolution and 30 frames per second. Overall, video performance was the best among all folding phones tested to date. Target exposure was pretty accurate, but our testers sometimes observed low contrast. Video noise was well under control in bright light and under typical indoor conditions, but noise could appear in low light. The autofocus system worked accurately, without any noticeable failures. In addition, video stabilization worked effectively, keeping camera shake at bay.
Not all was perfect, though. Our testers found that texture preservation left room for improvement, especially when texture artifacts such as scene integrity made an appearance. Color could be unstable under some conditions as well, but overall color rendering was natural.
Exposure
Google Pixel Fold
116
Color
Google Pixel Fold
120
Exposure tests evaluate the brightness of the main subject and the dynamic range, eg. the ability to render visible details in both bright and dark areas of the image. Stability and temporal adaption of the exposure are also analyzed.
Image-quality color analysis looks at color rendering, skin-tone rendering, white balance, color shading, stability of the white balance and its adaption when light is changing.
Texture
Google Pixel Fold
118
Texture tests analyze the level of details and texture of the real-life videos as well as the videos of charts recorded in the lab. Natural videos recordings are visually evaluated, with particular attention paid to the level of details in the bright and areas as well as in the dark. Objective measurements are performed of images of charts taken in various conditions from 1 to 1000 lux. The charts used are the DXOMARK chart (DMC) and Dead Leaves chart.
Noise
Google Pixel Fold
120
Noise tests analyze various attributes of noise such as intensity, chromaticity, grain, structure, temporal aspects on real-life video recording as well as videos of charts taken in the lab. Natural videos are visually evaluated, with particular attention paid to the noise in the dark areas and high dynamic range conditions. Objective measurements are performed on the videos of charts recorded in various conditions from 1 to 1000 lux. The chart used is the DXOMARK visual noise chart.
Stabilization
Google Pixel Fold
119
Stabilization evaluation tests the ability of the device to stabilize footage thanks to software or hardware technologies such as OIS, EIS, or any others means. The evaluation looks at residual motion, smoothness, jellow artifacts and residual motion blur on walk and run use cases in various lighting conditions. The video below is an extract from one of the tested scenes.
Artifacts
Google Pixel Fold
86
Artifacts are evaluated with MTF and ringing measurements on the SFR chart in the lab as well as frame-rate measurements using the LED Universal Timer. Natural videos are visually evaluated by paying particular attention to artifacts such as aliasing, quantization, blocking, and hue shift, among others. The more severe and the more frequent the artifact, the higher the point deduction from the score. The main artifacts and corresponding point loss are listed below.
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