About DxOMark Mobile tests: For scoring and analysis in our smartphone camera reviews, DxOMark engineers capture and evaluate over 1500 test images and more than 2 hours of video both in controlled lab environments and in natural indoor and outdoor scenes, using the camera’s default settings. This article is designed to highlight the most important results of our testing. For more information about the DxOMark Mobile test protocol, click here. More details on how we score smartphone cameras are available here.
Outdoor test scenes take place in a variety of locations throughout metropolitan and suburban Paris. 室外測試場景的拍攝位置是固定在巴黎城市與郊區的不同位置。
總體分數的計算
The most frequently-cited score for a mobile device camera is the Overall score. It is created when we map the dozen or so sub-scores into a number that gives a sense of the device’s total image quality performance. An overall score is important, since we need to provide some way to rank results and have a simple answer for those not wishing to investigate further.
This graphic illustrates the overall process of creating a DxOMark Mobile score. The Overall score is created from a combination of the Photo and Video scores. Each of those scores in turn are a function—illustrated as f(x)—of a set of attribute sub-scores. As an example of what goes into each of these sub-scores, we have broken out the Color sub-score for Photo. You can see how it is based on tests performed under a variety of lighting conditions, including 20, 300, and 1000 Lux light levels. For each light level, the tests include both objective and perceptual scores that measure a variety of attributes. Similarly, we’ve broken out the Exposure sub-score as an example of how the Video sub-scores are also created from tests that we conduct under a variety of lighting conditions. These sub-scores also utilize both objective and perceptual tests that measure a variety of attributes, as well as incorporate both static and temporal (changing) scenes.