I fully appreciate your apology and understand how easily it is to try to help--without thinking it out to much. Damn if I don't do it all the time, myself. And, I get called on it.
That little setup is really a good value for some. I wish your buddy well.
We're cool. I'd buy you a beer anytime!
The distinction in 'Kelvin' numbers that I am aware: 2800k or so is normal incandescent tungsten filament bulbs. What we use all the time indoors. It has the benefit of adding a nice warm glow to a room.
The drawback in photography, is that translates into untrue colors with a familiar yellowish tint to the entire photo. (That's the 'nice warm glow')
The GE 'Reveal' bulbs are the same variety, but have a bluish coating (filter) on the glass, which helps remove the yellow. I think they are one step above. Somebody with more knowledge than me can fill in the technical details.
Lastly these new line of fluorescent bulbs have the ability to have a number of various warmth and cold lighting outputs. The 5000K-6500K range is supposedly what normal 'daylight' is to the eye. And in my experience, they are correct.
I say they are 75watts, but they actually are the equivalent
of a 'normal' 75w bulb. I think they are around 20w. Hence the energy savings as well.
In response to Tom Mayo's query, I laid a piece of mirror contact papaer on the backside of my 'kicker' board. Look for yourself:
So, I think it really makes a big difference.
And this thread would be unfair in not rementioning the best 'Low Cost--No Frills'
photo thread that PhilL started. This thread is a followup for those that MUST shoot indoors.
If you have a setup worth showing, add it in here. The more we visually see the setups the easier it is to grasp.