On Sat, 18 Nov 2000 16:21:28 -0500, Viorel Negoita wrote:
>On Sat, 18 Nov 2000 parkerfairfield@my-deja.com wrote:

>> I want to buy a digital video camera that has the ability to activate
>> its built in INFRARED abilities while it is daytime.

>How about using a filter that cuts visible but transmits INFRARED?

The video camera CCDs are normally very sensitive to IR, but
a filter is used internally to block IR, leaving camcorders
very insensitive to IR without having the internal filter
switchable. Using an IR-pass/visible-light-blocking filter
results in sensitivity too low for decent image quality even
on a very bright day. Unfortunately, Sony has chosen to
spoil a very nice feature (daylight-IR capability, great
for landscape shooting) for a silly reason (people may try
to use it for "X-ray" videos - but it really does not work
well for this...). For examples of frame-grabs of
daylight-IR, go to the TRV-9 review at:
www.David-Ruether-Photography.com/camcorder-comparison.htm