Some bloke
Newly Enlightened
i'll just jump in here to clarify things -
i did order 940nm for covertness, p60 turned up with 850nm on the packaging. there was minimal glow after the laser i'd been using, so went with it.
nailbender did say he defaulted back to 850 as this was brighter and what most people required. he offered to sort this out, but i declined, as was more than happy with the results from the 850nm.
now the 940 has the same power i may try one, but the watec might be less sensitive to this wavelength.
my p60 does indeed have three levels.
@ dave - i'll pull the reflector and try the ahorton out...
@ nailbender - could you do anything clever with this emitter http://uk.mouser.com/search/refine.aspx?Ntk=P_MarCom&Ntt=183811569 ?
Hmm - now that's a bit of a buggers muddle. The same power but different wavelength won't relate to the same amount of illumination seen by our cameras. The Watec is much less sensitive to 940nm than 850nm.
I want the same wavelength that Nobby has please - which it transpires is 850 as I initially thought.