the
type of beam matters,
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the best beam for art is Aspheric followed by mule or a reflector with added diffusion film on the lens:
High CRI matters a lot, but not all high cri LEDs have good Red rendering.. the 219b is one of the best:
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food for thought:
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the main benefit of High CRI is that Red will look Red, not greenish or washed out, or brownish...
I would not give an art expert a Low CRI LED, even if the host is pretty.
the size and weight of the light also matters.. decide what type of battery you want to use, as that determines weight and size: (middle light uses 18350, the other two are AAA)
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the type and color temperature of the LED also matters.. decide what color temperature LED you want. My favorite is Nichia 219b 4500k.