For Investigators like David who prefer nighttime investigations, video cameras that can "see in the dark" are of major impotance in evidence gathering. The Sony "NightShot" cameras have filled the bill for many investiagtors  for many years now. The problems started when Sony decided to stop producing the option in new cameras. Just a couple are on the maket now, from folks like Canon, but they are very pricey. There are cheaper offerings for investigators, but David always reminds buyers that "you get what you pay for." They are built on cheap made cameras and lack real quality or durability. In his presesntations, he urges everyone to be on the lookout for the older Sony's and let's save them for our work until the manufactureres decide our growing market is worth another try. David has six of the Sonys in DVD, Hi8 and mini-DV varieties. These are used for stationary watching and the dual unit he carries. Most are augmented with the large infared radiators he and Karen build themselves. See the ParaXperiments page for more details on those.  David is developing a new DVR setup too, but being very particular about how much they can se into the spectrum of light and how much they can provide on there own. Watch for details on those. For now, let's keep our eyes peeled at garage sales, flea markets, or whatever for those Sonys with the magic little NightShot switch. They are most important to our study and worthy of buying to save!