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So let's say that the IBL in your kit that is your most favorite, producing the most lovely contrast and shapes on your figure, actually turns out to be an outdoor one with a blue cast. You might think you shouldn't use that one, eh? That would be a mistake.

That's pretty much where I'm at, which is why I appreciated this. I have several really nice IBL images, but simply editing out the unwanted color or desaturating them before loading causes them to lose some of their "punch".
So this is the next best thing, really.