SLR cameras are blurred during shooting.

The causes of blurring in the shooting process are basically caused by "focusing" is not allowed.

First, when shooting with SLR, if AF focusing automatic mode is adopted, the focus may be in a trance state due to the change of contrast and position of "subject and background", and it is uncertain where the focus is, resulting in out-of-focus blur.

Second, using manual focusing, the angle and distance of the subject or SLR body change, which will also lead to defocusing.

Solution:

1. Accurately measure the distance between the subject and the lens (tape measure is required when shooting). Rehearse the actions of actors and machines in advance, determine the focus of each shot, and even hire a separate "photography assistant to follow the focus".

2. Use a model with focus tracking function: I used Panasonic's touch tracking to focus. Touch the LCD screen directly, and the machine will track the color of the subject in real time. No matter how it moves, it can follow the focus accurately.