Hi Rene,
I have shot lots of footage with the Raynox tele converter, & am very happy with the results. The only footage that i have that is shot with it & on the web though is all compressed & not in true hi def, so it may be hard to make comparisons. That being said, with any of the footage i have shot with the converter, i cannot see any loss of detail from the stock lens.
Groeten,
Bryce

Hey Bryce, that's good to hear. Thanks for your information.