Here comes this FO Quick Release Clamp DSLR Follow Focus with Adjustable Gear Ring Belt for 15mm Rod Rig Black which is very important to control the depth of field. Adopting high quality material and with fine workmanship， this follow focus features igh strength that it is durable in use. With meticulous craftmanship and professional design， it will effectively control the focus of lens， which is more accurate and stable. With this wonderful follow focus， the video could make bokeh and theme.                                    Features            Quick installationProvides quick and accurate focus， perfect for any photographerComplete gearbox driven designs for steady and precise movement of focusingDriven gear capable to install on either side which is suitable for right or left handed shooterMount on industry standard 15mm rod system (60mm rod&acute;s center to center)Flexible gear driven belt fits any lens with filter diameter from 52 to 86mmSuitable for all DSLR cameras                                                            Specifications            Material    PC !#!amp!*! Metal    <br>Weight    0.02 oz / 0.49 g    <br>Color    Black    <br>Dimensions    (6.69 x 3.54 x 3.54) " / (17 x 9 x 9) cm (L x W x H)    <br>Compatible with    Camera     <br>                                                            Package Includes            1 x Follow Focus <br>1 x Focus Ring<br>