You cannot correct what you cannot see, and shop fluorescents hide almost everything that matters. Defects have angles: a swirl shows under a point source, a hologram shows under a diffuse one, and residual haze on black only shows at a particular colour temperature.
That is why inspection lights are colour-tunable. Working between roughly 3000K and 6500K reveals different defect classes in the same paint, and a high CRI renders them accurately rather than washing them out. The alternative is finding out in daylight after the customer has left.
You cannot correct what you cannot see, and shop fluorescents hide almost everything that matters. Defects have angles: a swirl shows under a point source, a hologram shows under a diffuse one, and residual haze on black only shows at a particular colour temperature.
That is why inspection lights are colour-tunable. Working between roughly 3000K and 6500K reveals different defect classes in the same paint, and a high CRI renders them accurately rather than washing them out. The alternative is finding out in daylight after the customer has left.
