动态模糊背景人像

一张使用追拍技法的街头人像：骑自行车的主体被捕捉得极度清晰，而身后城市街道化为水平运动模糊。以1/30s快门速度配70mm f/4镜头追踪运动拍摄。主体——穿亮黄色风衣的少年——从脸部到夹克拉链都清晰锐利，表情专注而充满活力。背景——店面、红绿灯和行人——化为纯粹的水平色彩涂抹：红橙色店招模糊、绿色交通光晕、灰色路面拉丝。自行车车轮下的地面呈现圆形轮胎旋转模糊。黄金时段侧光从右方斜照在主体面部。氛围：动感、青春、都市活力。色调：鲜艳黄色主体对柔和运动涂抹的城市色调。

A street portrait using the panning technique: a cyclist-turned-subject is captured razor-sharp while the city street behind them streaks into horizontal motion blur. Shot at 1/30s shutter speed with a 70mm f/4 lens panned to track movement. The subject — a teenager in a bright yellow windbreaker — is pin-sharp from face to jacket zipper, their expression focused and alive. The background — a blur of shop fronts, traffic lights, and pedestrians — becomes pure horizontal smears of colour: red-orange shop signs, green traffic blur, grey pavement streaking. The ground under the bicycle wheels shows circular tire-spin blur. Late afternoon golden-hour sidelight rakes across the subject's face from the right. Mood: kinetic, youthful, urban energy. Palette: vivid yellow subject against muted, motion-smeared city tones.