In the process of exploring for really good plug-and-play LEDs, I came across Waveform Lighting. What’s good about the stuff this company sells is that they provide some of the specs you want for LEDs to help avoid potential pitfalls depending on what you are doing.
For example, rather than just indicating a CRI, which can be a murky measure, they give you Ra, R9, Re, what the continuous spectrum looks like, photometric reports, TLCI etc.
I was looking at their Absolute line for a specific purpose (currently they offer strips and modules, and I think individual components for those more skilled). They are supposed to be effectively flicker-free, and their dimmers are >25kHz (to accommodate high video frame rates).
Not exactly cheap of course, however they have other product levels a little less overkill and it occurred to me these might be of some use for making LED enlarger light sources, UV alt exposure devices, perhaps even safelighting.
Anyhow just mentioning for thought, discussion or whatever.
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