autofocus

A noun referring to an optical device or system that automatically focuses a camera, telescope, or other instrument.

• 🇨🇳名词，指相机、望远镜等光学仪器中能自动对焦的装置或系统，也可指自动对焦这一功能。

1. Automatic focusing system B2 formal technical

   An optical device or system in a camera or other instrument that automatically adjusts the lens to achieve a sharp focus on the subject.

   • The camera's autofocus quickly locked onto the bird in flight.
   • Modern smartphones rely on advanced autofocus for clear photos.
   • He switched the lens to manual mode because the autofocus was struggling in low light.

   🇨🇳自动对焦

• autofocuses plural form
• autofocuses' possessive plural form
• autofocus's possessive singular form