This Autofocus Electronic Lens Close-up Adapter Ring for Canon EOS Mount Black is designed to achieve ideal shooting effect. It is mounted between the camera body and lens to create more distance between the lens and film plane. The greater the length of the extension tube， the closer the lens can focus. Getting closer has the effect of magnifying your subject. It can be used separately or in any combination to obtain your desired magnification. This reliable autofocus electronic lens close-up adapter ring is an excellent item for you.                                    Features            By moving the lens further away from the film or sensor in the camera， the lens is forced to focus much closer than normal<br>The greater the length of the extension tube， the closer the lens can focus<br>It is durable and reliable for long-term use<br>This extension tube ring does not affect image quality， because there is no optics inside<br>Length adjustment will not affect sharpness and saturation<br>                                                            Specifications             Dimensions     ( 2.68 x 3.62 )" / ( 6.82 x 9.2 )cm (Diameter x H)    <br> Weight     6.38 oz / 181 g    <br> Material     Aluminum Alloy    <br> Color     Black    <br> Compatible with     Canon EOS mount     <br>                                                             Package Includes            3x AutofocusElectronic LensClose-up Adapter (13mm 20mm 36mm)<br>