What is the difference between "depth of field" and "blur"? How to generate a blurred background image with one click?

As ordinary people, we may not have the photography skills mastered by professional photographers, nor professional photography equipment. Most of the time we use mobile phones to take pictures. Sometimes we take pictures in crowded scenic spots, and there will be more or less tourists in the background. Passers-by, background clutter affects the beauty of the photo, how to deal with this situation so that you can become the focus of the photo again? In fact, the method is very simple. Today, let the editor teach you to blur the background with one click online, and save "waste movies" easily!

What is the difference between "depth of field" and "blur"

In general, "depth of field" refers to the relatively clear imaging range before and after the focus of the camera. After the focus is completed, the clear image presented in the range before and after the focus. The distance between the clear range before and after is called " Depth of field", when talking about depth of field, we generally use "depth" to describe it, that is, "shallow depth of field" or "deep depth of field".

Picture source Xiaohongshu: Eryaoba (Xiaohongshu number: 542565459)

For some images, such as landscape photos, it is more suitable to use a larger depth of field, that is, "deep depth of field", so that the photos taken show a clearer object effect and a wider range of clarity.

However, when taking portrait photography, you often use "shallow depth of field" (or small depth of field) to compose pictures, which can show an obvious "background blur effect", and the clear range is smaller, so we say "background blur ”, generally refers to using a smaller depth of field effect.

Why does the picture need to blur the background

When the background of a photo is blurred, the subject can become the focus of the photo, making the composition of the photo clearer and more aesthetically pleasing. In general, professional photographers will control the depth of field of the photo when taking pictures, or the distance between the nearest and the farthest objects in the photo to achieve the purpose of blurring the background, and they usually carefully calculate the distance from the subject to the camera Distance, reasonable use of aperture and lens choice to do this.

When taking pictures, the blurred background photos naturally formed by increasing the depth of field will have a more layered sense. Of course, this has high requirements for the photographer's photography skills and photographic equipment. If we do not have good photography equipment, we can only use mobile phones. When taking pictures, can you take natural and layered high-depth photos? If the background of the photo cannot be blurred by taking a photo, is there any other way to process the photo later?

How to produce a "background blur" effect when taking pictures with a mobile phone

The "Portrait" mode that comes with the iPhone can take pictures with the effect of blurring the background of the depth of field, so if your mobile phone is an iPhone, and the "Portrait" mode is supported in the camera app, then we can easily use this function to take pictures with a blurred background. Photo with depth of field effect.

Just turn on the "Camera" and switch to "Portrait", place the subject in a suitable position, and follow the shooting prompts to move the distance between the lens and the subject to easily take a photo with a blurred background.

If you want to adjust the degree of blurring, you can click [ƒ] in the upper right corner. The smaller the ƒ value, the blurrier the background, and the larger the ƒ value, the clearer the background.

iPhone models that support Portrait mode:

iPhone 11, 12, 13, 14 series

iPhone XS, iPhone XR, iPhone X series

iPhone 8 Plus、iPhone 7 Plus

How to blur the background of a picture online

Don’t worry if your phone doesn’t have a “Portrait” mode. We can also edit the pictures later to add a depth of field effect to the pictures, which can be achieved by using the “Background Blur” function of the AI ​​image changer.

Website address: http://img.logosc.cn/blur

The operation is also very simple, just drag or click to upload the picture to the website, AI will automatically and intelligently identify the subject of the picture, and add a blur effect to the background, so that a picture with depth of field effect is processed.

Click "Background Blur" to adjust the degree of background blur. The larger the percentage, the better the blur effect

A blurred image with an atmospheric background is processed, isn’t it very simple? If you also want to make the ordinary photos more layered and atmospheric, you might as well try to blur the background of the photo, which can not only highlight the subject, but also adjust the composition of the photo to make it more aesthetically pleasing. Anyone can become a photography expert!

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Origin blog.csdn.net/Huashanqiqi/article/details/128719193