特写：自动曝光，自动对焦，卡尔·蔡司光学，闪光，减轻红眼，自我定时器。
Feature: Auto Exposure, Auto Focus, Carl Zeiss Optics, Flash, Red-Eye Reduction, Self Timer.
这使LTC 6991适用于定时曝光控制计、看门狗定时器和周期性唤醒定时器，而所需的组件和工作量极少。
This makes the LTC6991 useful for intervalometers, watchdog timers and periodic wake-up timers with minimal components and effort.
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