The LMA-M42_M4/3 lens mount adapter is made of black anodized aluminium. The adapter allows M42 lenses (Zeiss, Pentax, Praktica, Mamiya and Zenit) to be used on Micro 4/3 body such as OLYMPUS EP1,EP2, EPL1, Panasonic G1, GH1, GF1 for great picture quality. Focusing can be infinity.
What is the external diameter of the adapter?Chris
JJC: Dear customer, the external diameter of the adapter is approximately 59mm (2.3”). Thanks!