150 hti

[ilauzirika]

Hi all!

I'm about to buy a moving head spot and it uses a 150 hti lamp. How would you compare it to a halogen one?

this is the spot.

http://www.musicstore.de/en_EN/EUR/...-DMX-inkl.-HTI-152-Brenner/art-LIG0004173-000

 

[Cool Lights]

It's just a metal halide bulb so you would multiply it by four (roughly) for its equivalent output to a tungsten. The HTI series is more often found in projectors because of its size (smaller than normal). What you have is just a spotlight so a projector bulb would work well for it. Usually the CRI of HTI bulbs is low but there are some that are fine. Such a 150w bulb could be counted on to be about like a 600w fresnel just like our Cool Lights CDM 150 fresnel which uses a similar bulb.

 

[ilauzirika]

Great, thanks Richard. I think they include an osram 150 hti (about 5000 kelvin), i don't know the cri of it. But I don't think I'll use it much in film setups, but I may sometimes (mainly acting as a gobo projector or serchlight...).

 

[Cool Lights]

If its this one:

http://www.interlight.biz/light-bulb/HTI 152W&ID=FROOGLE

That's great. Its CRI 90. However, most projector bulbs have a CRI in the range of 70 like this one:

http://www.elightbulbs.com/catalog_product.cfm?source=GoogleBaseCSE&prod=SL54078

So I'd ask some questions unless CRI isn't important to you.

 

[ilauzirika]

they offer both, so no probs then.

Thanks for your help Richard!