1、WIDELY APPLICABLE: This zoom controller is suitable for cameras with 8 pin connector, such as for PMW EX1, PMW EX3, PMW EX1R, EX280, EX260, X280, EX330, EX330K, EX330R, EX330L, PMW F3. 2、COMPACT SIZE: The camera zoom controller is small in size, easy to carry and use. It won't take up too much space and is easy to carry and maneuver during the filming process. 3、SENSITIVE OPERATING: Adopting the design of zoom knob, and you can adjust the zoom speed by changing the strength of your fingers, which is sensitive and smooth to operate. 4、FIXING: The camera zoom controller can be fixed on the rod with a diameter of 10mm to 30mm, which is stable and reliable. Easy to install, save time and labor. 5、MULTI FUNCTION OPERATING: Press the red button to start and stop video recording. W or T control buttons are easy to operate, eliminating camera shake and improving image quality. Supports recording (REC) and playback (RET) functions, providing a more convenient operating experience.