The PTM-ZCB3 Motorized Zoom Lens Controller from Tokina is used to control the motorized zoom lenses. The controller features a 4-pin mini DIN connector, an RS-232C terminal, a 15-pin D-Sub connector, and 15 points terminal block for Tokina auto focus lens control. The RS-232C terminal can be connected to Tokina RS-232C control lenses using an enclosed connector cable. The 4-pin mini DIN and 15-pin D-Sub connectors are used to connect the Tokina iAF auto focus lenses using an enclosed connector cable. The 15 points terminal block is used for individual lens drive cable connection.