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HP Dragonfly Chromebook

HP Dragonfly Pro Chromebook Laptop test

We put the HP Dragonfly Pro Chromebook through our rigorous DXOMARK Laptop test suite to measure its performance in sound, camera and display. In this review, we will break down how it fared in a variety of tests and several common use cases.

Overview

Scoring

Use-case and feature subscores included in the calculations of the global score

HP Dragonfly Chromebook
HP Dragonfly Pro Chromebook
90
camera
75

93

38

54

54

76

69

83

100
display
37

84

63

95

76

84

136
audio
134

149

127

133

112

153

Pros

  • Well-tuned camera exposure
  • Great display maximum brightness and accurate colors
  • Audio well suited for video calls

Cons

  • Noise and loss of details in high dynamic range scenes
  • Poor display uniformity and minimum brightness tuning
  • Impaired audio experience during multimedia playback

The HP Dragonfly Pro Chromebook’s camera exposure is well tuned, although the camera’s images can lose detail and introduce noise in high dynamic range scenes. The display has great maximum brightness and accurate colors, although its minimum brightness is too high in low-light environments and screen uniformity is poor. The laptop’s audio is well suited for video calls, but audio is impaired by strong processing during multimedia playback.

Test summary

About DXOMARK Laptop tests: For scoring and analysis in our laptop reviews, DXOMARK engineers perform a variety of objective tests and undertake more than 20 hours of perceptual evaluations under controlled lab conditions and real-life scenarios. (For more details about the Laptop protocol, click here.)
The following section gathers key elements of our exhaustive tests and analyses performed in DXOMARK laboratories. Detailed performance evaluations in the form of reports are available upon request. Do not hesitate to contact us.

HP Dragonfly Pro Chromebook overall & use-cases scores

Camera

90

HP Dragonfly Pro Chromebook

135

Apple MacBook Pro 14" (M3 Pro, 2023)
About DXOMARK Camera Laptop tests

DXOMARK evaluates the image quality of the built in camera during video calls, whether with a single person or with multiple people, in a variety of lighting conditions. Our camera evaluation particularly assesses the ability of the built-in camera to clearly render human faces during video calls. Other intrinsic camera quality aspects are also evaluated, like color reproduction, texture and noise, as well as artefacts.

The camera on the HP Dragonfly Pro Chromebook has generally accurate and stable target exposure, although strong noise is visible in high dynamic scenes and details are often lost. The display has a high maximum brightness that makes the display comfortable to read in a bright environment.

The following chart presents the camera subscores for the video call use case:

Camera scores comparison
Camera texture acutance on Deadleaves with illuminance levels
This graph shows the evolution of texture acutance with the level of lux measured on a Deadleaves chart.
The following graphs show the objective measurements performed in our camera labs:
Camera visual noise evolution with illuminance levels
This graph shows the evolution of spatial visual noise with the level of lux. Spatial visual noise is measured on the visual noise chart in the video noise setup. DXOMARK visual noise measurement is derived from ISO15739 standard.
Target exposure on face with illuminance levels
These measurements take place on a setup combining realistic mannequins and a backlit panel simulating high dynamic range conditions. This graph shows the evolution of lightness measured on the forehead of the realistic mannequin with the level of lux, for multiple lighting conditions. The lightness is measured in L*. Delta EV specifies the difference of luminance in stops between the face and the light panel simulating HDR conditions.
Target exposure on face with illuminance levels in HDR conditions
These measurements take place on a setup combining realistic mannequins and a backlit panel simulating high dynamic range conditions. This graph shows the evolution of lightness measured on the forehead of the realistic mannequin with the level of lux, for multiple lighting conditions. The lightness is measured in L*. Delta EV specifies the difference of luminance in stops between the face and the light panel simulating HDR conditions.
Target exposure on face with illuminance levels in HDR conditions
These measurements take place on a setup combining realistic mannequins and a backlit panel simulating high dynamic range conditions. This graph shows the evolution of lightness measured on the forehead of the realistic mannequin with the level of lux, for multiple lighting conditions. The lightness is measured in L*. Delta EV specifies the difference of luminance in stops between the face and the light panel simulating HDR conditions.

Display

100

HP Dragonfly Pro Chromebook

156

Apple MacBook Pro 14" (M3 Pro, 2023)
About DXOMARK DisplayLaptop tests

Through objective testing, DXOMARK evaluates the display performance by looking at 3 main aspects: Readability, HDR & SDR performances. While evaluating readability, our engineers will particularly focus on screen brightness, contrast, and reflectance, assessing the ease and comfort of viewing displayed images indoors. We also evaluate HDR & SDR performance while looking at video contents, verifying that the display rendering respects the original artistic intent of the filmmaker

Colors on the HP Dragonfly Pro Chromebook are accurate in both SDR and HDR; however, the display’s minimum brightness is too high for comfortable viewing in a dark lighting environment, and the screen has poor uniformity.

The following chart presents the display subscores:

Display scores comparison
The following graphs show the objective measurements performed in our display lab:
Display gamut coverage for video contents
Laptop
Video gamut SDR
Laptop
Video gamut HDR
The primary colors are measured both in HDR10 and SDR. The extracted color gamut shows the extent of the color area that the device can render. To respect the artistic intent, the measured gamut should match the master color space of each video.
Display reflectance measurement (SCI)
Measurements above show the reflection of the device within the visible spectrum range (400 nm to 700 nm). It includes both diffuse and specular reflection.
Display reflectance profile
Display brightness uniformity
1.351
cd/m²
1.168
cd/m²
1.253
cd/m²
1.138
cd/m²
1.187
cd/m²
0.956
cd/m²
0.688
cd/m²
0.717
cd/m²
0.562
cd/m²
Laptop Distribution of brightness (min)
1255.6
cd/m²
1066.1
cd/m²
1294.2
cd/m²
1428.8
cd/m²
1521.6
cd/m²
1254.6
cd/m²
1350.2
cd/m²
1040.9
cd/m²
951.1
cd/m²
Laptop Distribution of brightness (max)
This illustration shows the brightness measured on nine zones of the display for minimum brightness (left) and maximum brightness (right) for SDR content.
Display SDR EOTF measurement
This graph represents the rendering of contrast (gray levels) for SDR video content, measured in the dark. We expect to be close to the 2.2 or 2.4 gamma references.
Display peak brightness for video contents
Display white point
Laptop
This graph represents the color temperature of white content, compared with the reference (Daylight illuminant D65) measured in the dark on video at minimum and maximum brightness.

Audio

136

HP Dragonfly Pro Chromebook

148

Apple MacBook Pro 14" (M2 Pro, 2023)
About DXOMARK Audio Laptop tests

Combining objective and perceptual testing in our labs and in real life conditions, DXOMARK evaluates the audio performance on two main use cases: video call and music & video. On video call, our engineers look at the quality of the audio playback and capture, and particularly the intelligibility of speaker’s voices. One specific aspect that is also evaluated is the duplex performance, in situations where more than one person is talking, making sure that there’s no echo or gating and that necessary sounds are not lost.

The laptop’s audio provides very good timbre and great intelligibility during video calls. The audio has a very pleasant timbre in multimedia playback, although very strong compression impairs music rendition, and still elements seem to be moving in the stereo field while listening to music or watching a movie.

The following chart presents the capture subscores for the video call use case:

Audio capture scores comparison
The following graphs show the frequency response, distortion and directivity in capture, recorded in our semi-anechoic room:
Audio capture frequency response
A 1/12 octave frequency response graph, which measures the volume of each frequency captured by the laptop when recording an objective test signal at 1 meter in an anechoic environment.
Audio capture Total Harmonic Distortion + Noise
This graph shows the Total Harmonic Distortion and Noise over the hearable frequency range. It represents the distortion and noise of the device capturing our test signal.
Audio capture directivity
Directivity graph of the laptop microphone(s) when capturing test signals using the camera app. It represents the acoustic energy (in dB) over the angle of incidence of the sound source (normalized to the angle 0°, in front of the device).

The following chart presents the playback for the multimedia use case:

Audio playback scores comparison
The following graphs show the frequency response, distortion and directivity in multimedia playback, recorded in our semi-anechoic room:
Audio playback frequency response
A 1/12 octave frequency response graph, which measures the volume of each frequency emitted by the laptop when playing a pure-sine wave in an anechoic environment.
Audio playback Total Harmonic Distortion + Noise

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