Clarification of RGB, Tungsten and Daylight led lights?

[analogs]

If you have two daylight bulbs going, is that 2 X brightness of 1 bulb? eg. A bulb pulls out 10 lumens, 2 bulbs would pull out 20 lumens?

Is 2000K to 7000K (or RGB equivalent range) the full spectrum of RGB and vice versa? So if you were to buy just RGB lights, can you make 3200K tungsten and 5500K daylight lighting by adjusting the RGB lights?

If so, why do manufacturers sell RGB with daylight or tungsten bulbs, why not, just more RGB in a panel?

If you have daylight and RGB bulbs in a panel and mix daylight with RGB, does that mean you are decreasing saturation of the color?

If you have tungsten and RGB bulbs, what are you doing when you mix tungsten with RGB?

Which produces better CRI or TLCI, RGB bulbs or Daylight or Tungsten bulbs?

Can you remove any color casting (green or magenta) from Daylight or Tungsten bulbs by adjusting the RGB lighting section in a RGB/Daylight/Tungsten Light Panel?

Thank you.

 

[Run&Gun]

LED’s are getting better, but none are still really Full Spectrum the way true tungsten or sunlight is. RGB’s are not full spectrum, either. If you look at some of the manufacturers that do RGB and RGBWW lights, the RGBWW lights generally look better when making “white light”, because they are making that white light with dedicated 3200k and 5600k emitters. I may get flamed for this, but it’s why the LP Gemini, imo, looks better(skintones) than the Arri SkyPanel. Arri is just mixing RGB to get 3200k, 5600k and everything else, whereas the Gemini has actual 3200k and 5600K LED’s plus RGB’s, as well.

There are some interesting articles out there about how some of these panels actually work.

 

[cpreston]

I haven't seen any manufacturers advertising daylight or tungsten bulbs as "RGB". LED bulbs with a dedicated kelvin are generally going to be more accurate and more efficient than RGB lights.

You can mix and match and gel LED's and I'm sure that you can get a decent on camera look with enough work. Generally, though, the reason to use LED's is that they are quick to use and adjust. Trying to dial in or correct for a bunch of different bulb types is going to a bit annoying.