This research paper explores the advancements and applications of electrically tunable lenses (ETLs) within the domains of imaging and machine vision. The study presents an overview of diverse ETL technologies, detailing their operational principles, performance characteristics, and comparative advantages. Throughout the paper, we address the integration of ETLs into advanced imaging systems, analyzing their impact on system performance, image quality, and adaptability in varied application scenarios, including industrial automation, biomedical imaging, and autonomous systems. This paper seeks to provide a comprehensive understanding of current ETL technology and future directions for its potential.