Take out your lens from your camera body. | Mount the adapter ring to your camera body. | Reverse your lens with filter thread and screw it to the adapter ring until it is tight. | Note: Autofocus,automatic diaphragm (AE metering),and other functions dependent on communication between camera body and lens will be disrupted with this reverse ring mounting on the camera body. | To properly use this lens reverse adapter ring, you have to meet the below two conditions: | a.You have a for micro 4/3 mount camera,below are some of the micro 4/3 mount cameras for your reference: Compatible with for Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 E-PL5 E-PL6 E-PL7 E-PL8 E-PL9 OM-D E-M1 E-M1 Mark II E-M5 E-M5 Mark II E-M5 Mark III E-M10 E-M10 Mark II E-M10 Mark III E-PM2 E-PM1 PEN-F OM-D E-M1X.Compatible with for Panasonic G1 G2 G3 G5 G7 G9 GH1 GH2 GH3 GH4 GH5 GH5s GF1 GF2 GF3 GF5 GF6 GF7 GF8 GM1 GM5 GX1 GX2 GX7 GX8 GX9 GX85 GX80 GX850 G90 G91 Micro 4/3 System Camera. | b.You have a lens with 49mm filter thread, below are some of the lens(Mounts Any lenses with Ø 49mm filter thread to a micro 4/3-Series Camera) | Compatible with For Canon EF49mm Lens: EF-M 15-45mmf/3.5-6.3ISSTM, EF-S35mmf/2.8ISSTM, EF50mmf/1.8STM, | Compatible with For PENTAX 49mm Lens: DFA100mm/2.8Macro, DFAMACRO100mmf/2.8WR, DA 10-17mmf/3.5-4.5ED, DA15mmf/4EDAL Limited, DA21mmf/3.2AL Limited, DA35mmf/2.8Macro Limited, DA40mmf/2.8 Limited, DA70mmf/2.4 Limited, FA28mmf/2.8, FA43mmf/1.9 Limited, FA50mmf/1.4, FA77mmf/1.8 Limited, DA15mmf/ 4 Limited, DA40mmf/2.8 Limited, FA35mmF/ 2, DA35mmf/2.4AL, DA 50-200mmf/4-5.6EDWR | Compatible with For Sony 49mm Lens: FE28mmf/2.0(SEL28F 20), FE35mm/2.8ZA(SEL35F28Z), E30mmf/3.5(SEL30M 35), E24mmf/1.8ZA(SEL24F18Z), 28mmf/2.8(SAL28F 28), DT30mmf/2.8SAM(SAL30M 28), E16mmf/2.8(SEL16F 28), E 18-55mmf/3.5-5.6OSS(SEL 1855), E20mmf/2.8(SEL20F 28), DT50mmf/1.8SAM(SAL50F 18), FE55mmf/1.8ZA(SEL55F18Z), E 55-210mmf/4.5-6.3OSS(SEL 55210), FE50mmf/1.8(SEL50F18F), E35mmf/1.8OSS(SEL35F 18), E50mmf/1.8OSS(SEL50F 18),