How do gray and hazy pictures become clear and sharp in an instant? One trick can be some old photos and pictures taken on smoggy days, often give people a gray, blurry, want to use really can't see.

How do gray and hazy pictures become clear and sharp in an instant? One move is enough

Some old photos and pictures taken on smoggy days often feel gray and blurry, and they can't stand to use it. Is there a quick way to make it clear and sharp? Yes, you can use the "defogging" function in mobile phone photo editing. The following 3 sets of pictures are the comparison effect after using the "defogging" one-button function.

The principle behind the "dehaze" function is: improve the contrast of the picture, that is, make the bright places brighter, and the dark places darker; To improve the saturation of the picture, in layman's terms, is to make the green in the original picture greener, red more red, yellow more yellow; The moderate graying of the middle tone is to make the middle part that is not bright and dark to the light and dark sides.

There are two points to pay attention to when using the "dehaze" function: first, it may cause the picture to be oversaturated, that is, the color overflow, at which time you can reduce the saturation more; Second, portrait face close-ups and pictures with more bare skin should be used with caution, which may lead to "noise" on the skin, that is, speckled particles like the blank wall before decoration, which is very ugly. You can experiment first (the old photo of Chen Chong below works fairly).

The "defogging" function is effective in most cases, but after all, it is an expedient measure to save the "waste film". To really shoot the perfect "blockbuster", choose the best time on a sunny day, shoot with a high-resolution DSLR camera or mobile phone, and refine it with PS software.

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