Here is an example and he just clarified - “how accurate is accurate enough” and that was what he originally stated.
Who knows. Not me. I’m not inclined to invest in them at this point to find out. Certainly people have already done these tests.
I’ve just heard the blanket statement - non uniform spectral distribution associated with them several times.
I don’t know anyone on these forums who have actually done tests of various brands and forms of led light within the context of the copying of paintings .
Is there any published material online from someone who is actually using them?
If this involves buying a color meter and doing continuous tests as the lights constantly change as they age I’m not into that
I’d rather use hot lights.
I’m very ignorant of the technical capabilities of led light banks, other than the great light displays of James Turrell.
I don’t know which types and brands are better for this purpose and how much that matters. They are all apparently sold as video lights. I see none being sold as accurate copy lights, and found nothing written about it. I do know not all led brands are equal, that’s for sure. There are too many original sources, most if not all from China.
Actually I had pretty much written them off until I saw that the very accurate Cruse scanner uses them as a light source. I’ve used lots of Cruse scans and never had issues color balancing painting scans from them at all. I don’t think this lab is constantly profiling them, though Cruse does offer them rgb profiles of some sort.
I just don’t know how random it is with most of these strips…
John
Quote from: TechTalk on June 22, 2022, 03:42:12 pm
There currently are no LED light sources that will output a consistent and uniform spectral distribution. That said, there are some that are very good. Ultimately, it will depend on how critical your demands are for color reproduction accuracy. The Lowel Tota-Lights will certainly be better than any LEDs in this regard, but there is the heat that comes with it. You will likely need to run some tests to decide whether LED lights are a workable compromise for your application.
Who said this and when?
What accuracy in dE was provided with how many samples and compared to what reference?
Do many LED's have potential issues producing some metameric failures due to their SPD? Yes.