How does Canon 700d shoot a virtual picture after real shooting?

Taking a photo of "front reality and rear emptiness" is the shooting technique of "blurring the background".

Fuzzy background involves many factors, the main factors are:

Focal length-The longer the focal length, the smaller the depth of field and the more blurred the background (and foreground).

Aperture-The larger the aperture, the smaller the depth of field and the more blurred the background (and foreground).

Object distance-The closer the object distance, the smaller the depth of field and the more blurred the background (and foreground).

Based on the above factors, if shooting conditions permit, you should:

1, use a large aperture (small aperture value) as much as possible;

2. Longest focal length (large focal length value);

3, the lens as close as possible to the subject.

In addition, the background should be arranged as far away from the subject as possible, so as to take pictures with blurred background and clear subject with limited equipment.

In addition, post-production can be carried out by image processing software such as Photoshop, and the desired effect can be obtained, but this kind of production requires a good grasp of image processing software. However, the post-production system has an unnatural effect because there is no gradual change of depth of field.