Lens extender for 18-200 power zoom lens?
 

Has anyone tried any of the 2x zoom lens extenders for the sony mount lenses?
I see several on line and don't know which is the best. It looks like they all allow auto focus.
Thanks
Bruce Yarock

NEX-VG20 50p [PS] REC mode
 

Hey guys, looking to solve an issue I'm having with capturing in 50p [PS] REC mode where the manual settings will not respond. A dialog pops-up stating press the Manual button to change Exposure. Shutter Speed and IRIS produce the similar response when manually changed but none of these parameters are set to Auto. Similarly, shooting in 25p [FX] REC mode doesn't reproduce the same issue. Tell me this is operator error.