Because of the rapid spread of the full-display screen, the OnePlus has also accelerated the pace of product update, form one year to almost half a year. Compared to the previous generation, OnePlus 6 also updated the camera subsystem.
OnePlus 6 adopts dual camera design, and the aperture of both lenses is F1.7, equivalent focal lengths about 26-27 mm. The main camera is integrated with OIS, corresponding sensor is the Sony IMX519, a 16MP one. OnePlus officially claimed that the added area is 19% higher than the previous generation IMX398, which is supposed to be an 1/2.6 inch one. A dual-core focusing system is integrated on the sensor to achieve a very high-speed focusing experience. The secondary camera sensor is a 20MP one, and the corresponding sensor is IMX376K. Both sensors are used first by OPPO, and OnePlus is sharing some supply chains to OPPO, which is good for reducing the production and development costs of OnePlus.
OnePlus also began to introducing AI concept, known as "2x speed AI dual camera", "when you press the shutter, you can get up to 2x of image data to multi-frame synthesis", we simply infer that both cameras are simultaneously sampling and synthesis.
OnePlus 6's main camera supports dual-core focusing, but the number of focus points is not clear, at present, there should be only more than the number 100. In practical applications, the difference of it from the full-pixel dual-core focusing experience is very small, especially with the support of the mature pre-focus system, which can achieve fast and accurate focusing.
The central auto focus area of OnePlus 6 is small, and if the subject is out of the central area, the focus point may be directly opposite to the background. In composing experienced users would usually put the subject off the central, which will contradict the OnePlus 6 focus logic. The solution is to manually set the focus point and reduce some efficiency. Nowadays, many mobile phones are improving this situation, searching for a suitable focus object in a larger area of the center, or temporarily locking the focus for a while after focused, and during the slow recomposing process, the focus will continue to be locked. Soomal hopes that OnePlus add these focus optimization projects as soon as possible.
OnePlus 6 metering mode defaults to average, while previous series were central average. The "average" method is global metering, and different modes have their own advantages and disadvantages. With further improvements of mobile phone camera technology, metering becomes more and more intelligent, scene linking has become a technology trend, and OnePlus 6 should have a similar mechanism. Under this mechanism, whether the metering mode is "average" or "central average" or "central focus" is not important.
OnePlus 6 metering performed well and improved over the previous generation. Only lighter objects with less intense light would have a slight overflow, or be controlled at the edge of the spill, and the highlight detail would be better. Under low light, there may be overflow in the spot light source area or the high light reflection area, but it is not too serious.
Touching the screen to focus will activate the spot metering linkage, but the sensitivity is low, and the effect on the overall metering of the screen is about 1 EV, which is easy to grasp. OnePlus 6 also has a face-priority metering mechanism to activate HDR balance background with sufficient face metering. This metering logic is also used on models such as vivo and OPPO ones, and some models of Samsung and Huawei also have similar features.
When OnePlus 6 meets light shining straight in, some special angles will produce more obvious ghosts. For example, the photo Small paradise is only needed to avoid, ghosting will not be too obvious, or it will be incorporated into the composition. The effect of backlighting on the contrast of the screen is not too large, and it will not cause obvious fogging. When the light side shining in, there may be obvious fogging, but it is easy to avoid. Backlighting scenes usually activate the large-scale processing of HDR, which sometimes brings a grayish look and feel. This is a deficiency of the algorithm, not the optical performance of the lens.