the first digital BW picked up IR.. and on wet film ir was a nightmare in the day, so no doubts there were unaficial uses of that 'negative' aspect.
it wasnt untill colour and BW was realised that the IR cut filters were hurredly glued into everything they could, then the 'night cam' came about, for an extra 100 quid they'd leave the filter out.. a word that rhymes with rats? starts in T...
after the sonies in the late 80's with their nightveiw, the one that saw through cloaths, well..nearly, never actualy did fully, but non the less freeked the fridget into a dispair based rampage of outrage, it was a case of the camera's were 'detuned' in the light frequencies to reduce the ir ppick up levals.
then hay ho, came out the true night vision cams in the early 90's (ish) that, ermm..picked up IR? the clever design here was the developement of a colour system that could could switch to BW... ok ok, they put a tiney BW sencer next to the colour sencor.. ah, yes but no but yeh but no but...colour see's in shades of grey, then a program sort of applies the colours to the grey data.. all be it theres a split of the three colours verses a two way split of pixals in BW, eather way theyve taken off features and charged you more, then seem to charge you more again on top for old obsolete tecnology, or by simply removing a filter that lost you the ir capeability in the first place.
(not forgetting ir was bad by day...so well.. that new night cam..ermm.. its a con off a price lol).
to trundle in more.. intencifiers were used in WW2 for spotting from a plane.. the camera side of things will ave been around for a few years before we got to hear, let alone buy one, alas, as far as secrets go, they dont usualy advertise lol.
late seventies had securty gear that would see IR very well. including camera's coupled with IR intencifier tubes, again a WW2 usage thing.
added in... and night vision/hi iso's wet film stuff from before that..infact as i think back, a cheap old digi cam from years back was actualy really good at night, as we progress they seem to be ermm.. cr@p untill you pay more, maybe a coincidence.. might not be.
you have now entered the twighlight zone.....
Last edited by hoffmyster86; 08-02-2012 at 09:17 AM.