Unfortunately it may still not be that simple because there IS a difference between a filament light source and a diode. This may or may not make any damn difference at all, but unlike Halide and T5 if you slow time down the LED is blinking while the filament bulbs are not. Does this make a difference? Who knows?
first none of the other common ones is "exactly" a filament light source
T5 excites phosphors by the photon emissions from a mercury "plasma" excited by err ..lightning.
MH's excite mercury and metal salts by electrons.
NONE are close to "tungsten" like really.
Actually both also do "flicker".. the excitation is not 100% stable.
"Old" tech tubes flickered at the frequency of the line ie 60Hz
LED's "flicker" either due to pwm dimming or because power supplies are not "constant"
Switching power supplies pulse output at some set frequency to make them stable in voltage.
Unless poorly designed most LED flicker is at worst 500Hz, though yes it can show up as looking lower. not sure why exactly.
Well cameras can easily detect it w/ fast shutter speeds.
In home and AC issues may contribute.and cheap DC conversion circuitry.
Power supplies "flicker" at usually much higher frequencies.
Typical frequencies range from a few KHz to a few megahertz (20Khz-2MHz).
Ocean light "flickers" as well due to wind/wave/current/ particulate/fish action.
and like I tried to say is that you can match both PAR and color temp w/ LED and MH yet get different results due to "different" (not better or worse exactly) spectrums..
Not to mention it's pretty common knowledge that 6500K MH probably give both best growth and color.. Whether you see it or not..
yet who "prefers" them over say 10000K
See I listen..
ask yourself why?
In a sense the "knock" on LED vs MH is no different than saying
"you should use 6500k not 20000k MH's You will get better growth and color"
Yet that argument is rarely mentioned..
bottom line is everyone compromises somewhere.....depending on the goal.
guess to sort of complete this there is a difference between color and color you see..