I have always used device control when doing PTT and has worked well – apart from times when Vegas 5 crashes during PTT.
This may be completely off-track bu I normally edit in PAL. I have an old Cannon ZR10 (NTSC) which I use for making NTSC copies. I find that Vegas does not recognise this camera when doing PTT. I found that 9if I tick ‘use Microsoft codec’ in Preferences, Vegas communicates with the camera.
Regards
Mahesh
https://www.crestvideo.co.uk