➀ Samyang introduces the world's first optical exchange autofocus lens, allowing users to swap internal optical systems for different focal lengths. ➁ The Samyang Remaster Slim features a magnetic mounting system for easy optical element replacement and is available in 21mm, 28mm, and 32mm versions. ➂ The lens is Samyang's thinnest AF lens, measuring less than 2cm in length and weighing about 80 grams, suitable for Sony E-mount cameras.