Any experience with this x3 teleconverter from Sony? I have read a lot about Sonys HG converters. How about the quality of Sony VCL-ST30? It weights about 16.6 oz, so its full of glas... (6 elements in 4 groups). I use a HC1000. This converter would do a lot to my cameras reach.. (from 588mm to ca: 1700mm)

/jens...