JJC Z-S16-50 Self-Retaining Open Close Auto Lens Cap for SONY PZ 16-50mm F3.5-5.6 OSS Alpha E-mount Lens It adopts a screw-in design and can be mounted on lens front without scratching the lens The four leaves of the lens cap will automatically hide as the lens extends, so you don't need to remove it from the lens when you want to take photos. It helps to ensure that you don't misplace or lose your cap. The four leaves will automatically close as the lens retracts. Compatible with Sony 16-50mm f/3.5-5.6 OSS Alpha E-mount Lens SELP1650