Neewer 10059110 Automatic Macro Extension Tube Set for Micro Four Thirds Mirrorless Camera System with Auto Focus Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. The extension tubes have no optics. They are mounted in between the camera body and lens to create more distance between the lens and film plane. By moving the lens father away from the film or CCD sensor in the camera, the lens is forced to focus much closer than normal. The greater the length of the extension tube, the closer the lens can focus. Fits Panasonic G1 G2 G3 G10 GH1 GH2 GH3 GF1 GF2 GF3 GF5 GX1 GX2 Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 E-PL5 EM-P1 EM-P2 EMD