My previous blog (Sony NEX-5N First Impression) has given an introduction on this lens converter - Sony VCL-ECU1. Here is a more detailed post on this lens converter show what this converter is capable of.
First, this converter is suitable only for E-mount 16mm F2.8. There are reviews on other websites saying that it is also compatible with Panasonic M4/3 lens 14mm F2.5. I can't test this out since I don't have the lens around. The converter...