I have a 10-140 f1.7, it focus only while zooming (with gh2 EFT). Great image quality, but usable (mine) only like a prime lens on different focal ranges, since while zooming it loses focus. Do you know how to fix this issue?
Thanks and sorry for using this thread, but i didn't find anything about it since i had this lens.
Jean
This lens is parfocal when the back focus is adjusted correctly. The rear of the lens is too wide to fit in the recess of an m43 adapter, which makes it impossible to mount the lens close enough to the sensor. The lens mount has to be modified to make a proper mount, or, as LeeM has done, put an extender between the lens and the adapter. The extender he used fits an m43 adapter, though not all do.
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