Although
Sony has since modified their
camcorders so the
Nightshot mode no longer has
exposure control, and daylight shooting will be totally blown out to white, you can still buy these
near-infrared filters (aka PF or Xray) from several places online. Kaya Optics is one I remember. You will, of course, pay the
pervert markup.
Leaving aside the voyeur factor, these things can also show guns or shoplifted items beneath clothes, a robber's face beneath a mask, even see through tinted windows.
I'm not sure why
SharQ is so sure I'm wrong, but I have
actually seen the
output from cameras with these lenses, and you can indeed see right through thin clothing, masks etc. No
empirical data on tinted windows; it was alluded to on one of the review sites.
I guess readers will have to venture out into RL and see for themselves. :o)