Teradek RT Pre-Marked Focus Ring, 3.5' Minimum Focus - Imperial

Pre-marked focus rings work with the Teradek RT's Lens Mapping features on compatible Controllers.Be sure to select the appropriate pre-marked ring for your lens.CTRL.1 introduces built-in lens mapping, which allows for auto-calibrating lenses to pre-marked focus rings and accessing configurations at any time with the touch of a button. Pre-marked rings cover multiple lenses, saving time on set from manually calibrating after every lens swap.