Halogen as 2nd illuminant source for .dcp

[howardm]

Since good 'ol incandescent lamps are getting rarer and rarer, how 'appropriate' is it to use a tungsten/halogen (generic, not a Solux or specialty) as my 2nd source when making a dual illuminant profile?  I see the shape of its overall spectrum is very similar but more suppressed in the blues but I'm assuming it's going to do some form of interpolation.

And for that matter, what if you choose sunlight and an F illuminant as the 2nd source?

Yes, I'll be rewatching the Dog's videos on this but wanted to ask here first.  It's been my thinking that new profile is needed when the impinging spectrum is 'significantly' different

[digitaldog]

I see the shape of its overall spectrum is very similar but more suppressed in the blues but I'm assuming it's going to do some form of interpolation.

That's what counts.

[Doug Gray]

That's what counts.

^This

A halogen lamp is an incandescent lamp. It's main advantage is that the evaporated filament gets removed from the glass and deposited back on the filament so the bulb doesn't dim over time. They usually operate at a slightly higher temperature but it's not significantly higher.