High-resolution low-distortion day and night zooming camera lens and use method thereof

The invention relates to a high-resolution low-distortion day and night zooming camera lens and a use method thereof. The mechanical structure of the lens comprises a front-set lens seat installed on the front set A and a back-set lens seat installed on the backs set B. The front-seat lens seat is movably installed in a front-set lens cylinder. A front cam used for driving the front-set lens seat to move back and forth sleeves the outer side of the front-set lens cylinder. The back-set lens seat is movably installed in a back-set lens cylinder. A back cam used for driving the back-set lens seat to move back and forth sleeves the outer side of the back-set lens cylinder. A dual-optical filter switcher is arranged between the front-set lens cylinder and the back-set lens cylinder. A front locking tightening nail used for driving the front cam to rotate is arranged on the front cam. A back locking tightening nail used for driving the back cam to rotate is arranged on the back cam. The front set A with the zero f