Hi, fellow torchlovers...
This is my powerfull 10 watt HID-torch:
And this is its beampattern:
Even the best halogen-torch needs a 5 inch reflector to reach the cp-output of the 10 watt HID with a 2.5 inch reflector.
Example: The Mag Charger has about the same reflector-dimensions as my 10watt HID, but it puts out 30,000 cp's at the most!
I managed to use one of the hotspots of the HID-arc to create the central 250,000cp-hotspot (one degree wide) in the centre of the beam, so this is one of the extremes: In general you can get up to 3 of 4 times the cp-output of halogen. So with HID the mag would have about 100,000cp
I hope this makes things clear: Delvance already said it: Due to the higher surface brightness (in general up to 6 times higher than halogen) and the higher colortemp, HID always will seem much brighter when you look into the beam
This has nothing to do with lumens output: A 30 watt halogen projection bulb has the same surface brightness as a 250 watt projection bulb !
So both bulbs will give the same throw with the same reflector, only the 250 watt will give a much wider beam. Put a HID in that reflector and you will have twice the throw !
So the question indeed is: what do you want??:
Halogen: -instand on; -low costs; -3100K colortemp (they are aviable with higher colortemp but those have painted bulbs with much lower lumens output)
HID : -30 sec wharmup; -more efficient; -higher throw; -longer lifespan; -4100-10,000K colortemp....
But be very carefull: where halogen does not have the capebillity to permanent damage your eyes.. HID DOES !!!
Any questions ??
Regards,
Ra.