Pixco Auto Focus Macro Tube for Micro 4/3 Micro Four Thirds Mount Camera Panasonic GX1/GH3/GH2/GH1/G6/G10/G5 Olympus E-M5/E-PM2/E-PM1/E-PL5/E-PL3 .Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Support autofocus function and gives you confirmation signal in view finder once you focus objective accurately. They contains two tubes of different length, a 10 mm, 16 mm, which can be used individually or in any combination to obtain the desired magnification. It usable in 3 different lengths. It couples perfectly with the camera's automatic diaphragm. Compatible with: Micro 4/3 Camera Such as Panasonic LUMIX GH4 GM1 GX7 GF6 GH3 G5 GF5 GX1 GF3 G3 GH2 G2 GF2 G1 GF1 G10 Olympus OM-D E-M1 E-M5 E-M10 Pen E-PL7 E-PL6 E-PL6 E-P5 E-PL5 E-PM2 E-P3 E-PL3