_Axel_ wrote: ↑Sun Oct 04, 2020 6:33 am
I am in the process to update the light fixture in the spare bedroom, where I stand when shooting 10m across the cabin to my pellet trap in the other end. I am atm looking at a 600x600mm 70W LED panel. It seems like sorcery a single panel smaller than the twin 18W florescent tubes I now use can be more than twice an luminous (One 590mm 18W tube is somewhere near 1800lm from my interweb searchings) However the seller of LED panels gives to options, one is 4000Kelvin (recommended for normal use) the other is 6500K ("for painters and aquariums"). Any suggestions for shooting!? The room is not used for much else than standing in when I shoot.
Not sure what you're saying or asking. It seems that there is a confusion of the units being used. There's a lot going on in your post.
A watt is the amount of electric power consumed. volts x amps = watts
A lumen is a measurement of the amount of light emitted. ie. brightness
Kelvins refers to the color temperature of the light.
1,000K is a reddish orange color
1,500-2,000k candlelight
2,500K standard incandescent bulb/sunrise (warm white fluorescent 2,500-3,000K)
5,000K bright noon sun (natural white fluorescent 4,000-5000K)
7,000 overcast sky (cool white fluorescent 7,000-7,500K)
10,000 blue
LEDs are more efficient emitters of light than other sources. So you can get more lumens for less watts. They are also available in different color temperatures depending on the color of light you want. A higher color temperature might seem harsh while a lower temperature may seem too warm.
Yes, warm light color refers to a lower color temperature. Humans call higher color temperatures cool because we relate blue to ice or cold. Conversely, we refer to cooler color temperatures as warm because we relate fire, which is a lower color temperature, to hot. Not to get too technically geeky, this all comes for the fact that the color temperature in kelvins is based on black body radiation.