A lot of people know about it, but they seldom use it. Today, I would like to share with you how to use the HDR function of mobile phone to take photos. I hope it will help you. The letters < / P > < p > HDR are abbreviations for high dynamic range, which means “high dynamic range”. So what is high dynamic range? I’ll give you an example to understand. < / P > < p > when we take photos with a certain light difference ratio, if we take care of the highlight area, the details of the dark area will be lost; if we take care of the dark area, the highlight area will be overexposed. < / P > < p > at this time, we can solve this problem by turning on the HDR function of the mobile phone camera. The HDR function will take several photos with different exposures, taking care of both the bright and the dark, and taking details. < / P > < p > over exposed photos take dark places – rich details, normal exposure takes intermediate tone, underexposed photos take bright places – rich details, and finally synthesize a photo with normal exposure. < / P > < p > it is said that the direct white point HDR function is used to deal with the large light difference ratio environment, especially the mobile phone tolerance is low, and many times it can not be pulled back in the later stage. Therefore, it is a good choice to use HDR to deal with the large light difference environment in the early shooting. < / P > < p > generally speaking, HDR is used in the environment with large light difference ratio, such as sunrise / sunset, scenery, etc., and the effect is also very good. < / P > < p > ① moving objects: if you take pictures of moving objects and turn on the HDR function to take pictures, the HDR function will make the object in the picture appear ghosting. < / P > < p > ② take silhouette: the requirement of silhouette theme is extreme contrast. The light part is exposed normally, and the dark part is pure black. If you turn on the HDR function when shooting the silhouette theme, you will not be able to shoot the silhouette theme. < / P > < p > ② shooting night scene: when using the HDR function of mobile phone to shoot night scene, the noise of the picture is very serious. I don’t recommend using HDR function to shoot night scene. < p > < p > conclusion: HDR function is a very interesting function, we need to try more when shooting; at the same time, we should use it carefully, because the film will be useless if it is not used well. Continue ReadingAmerican companies begin to give up R & D: who should pay for corporate research?