The characteristics that the best lens should possess

The best lens should possess the following core characteristics:
Optical quality
High resolution: capable of capturing more details and clearer images
Low distortion: reduces straight line distortion, making shooting more realistic
Anti glare: purer images in strong light environments
Dispersion control: more accurate color reproduction
Lens parameters
Constant large aperture (F2.8 and above): ensures sufficient light intake in low light environments, improving image quality
Lens group optimization: 9 or more lens designs reduce purple edges and glare
Anti shake function: Handheld shooting is more stable and extends the safe shutter time
Applicable scenarios
Zoom range ≤ 3x: reduces distortion and dispersion issues
Focusing motor: Ultrasonic motor improves focusing speed and accuracy
Different scenes need to match specific camera characteristics:
Portrait shooting: 70-135mm focal length+large aperture (F2.8 or above)
Landscape photography: wide-angle zoom lens (e.g. 14-24mm)+high sharpness