I saw an interesting science demonstration once where the presenter had a box painted white on the inside, with three lights of different colours (RBG, I think) shining into it. He turned down the house lights & adjusted the brightness of each one until the audience generally agreed that the inside of the box looked white. Then he put various fruits & vegetables in the box & they did not look right.
Thats because the eye doesn't see a continuous range of colour. It only sees the relative levels of colours in three fairly wide bands and the brain constructs the colours from that information.
Its quite easy to fool the brain about the actual colour and what you think you see. There are images where you can move a square of material from one spot to another and its perceived colour changes. Add in that the sun is not a black body emitter of light and has some very strong yellow lines in it and you can see why colour varies so much from person to person.
AIUI, photographs & RGB displays meant for humans won't fool insects because they pick up 5 (or is it 6?) colour bands.
I think it varies.
Goldfish have 4.
A Mantis shrimp has a full on spectrometer, and a polarimeter.
Andy
What about turning off the camera's white balance, taking a photo, and seeing what it shows up like in Photoshop?
Only cheap s*it LEDs. Ones made well are not pulsed.
A decent LED light doesn't pulse.
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