DSLRKIT Takumar M42 Lens to Micro 4/3 M4/3 Mount Adapter with Tripod Mount GF3 G3 E-P3 This adapter makes all M42 mount lenses (including Takumar M42 lens) can be used on Micro 4/3 SYSTEM cameras. This adapter have a extra Pentax Takumar M42 inner ring that shown in left of the picture. you can change it with the bonus wrench. The adapter has a rotatable inner ring.after you install the lens,loosen the screw on the adapter with attached allen wrench,you can adjust the scale of the lens towards any direction as you need. Suitable For (1) LENS: Pentax Takumar M42 and Others Universal M42, (2) CAMERA: Olympus E-P1, E-P2, E-P3, E-PL1, E-PL2, E-PL3, E-PM1, (3) Panasonic DMC-G1, DMC-G2, DMC-G3, DMC-GH1, DMC-GH2, MC-GF1, DMC-GF2, DMC-GF3, DMC-GF7, DMC-G10. Adapter is built with 1/4in Screw tripod mount. It is possible to use Macro rings and other accessories. Focus to Infinity. Material: Anodized Aluminum