Blend Modes in Detail: 'Soft Light' Calculations

Ok this one's a bit of a geek video, though it may be surprisingly interesting anyway. It took a bit longer to do as I had to find a way to illustrate how it works (rather than just show sums). It was a bit of a journey of discovery for me too, and I had some brilliant 'aha' moments along the way. Hope you get them too!

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