Relationship between Diffusion, Softening and Distance

I came across this interesting article by Ed Moore and Stephen Murphy, where they tested a lot of different lighting diffusion materials. I recommend checking it out: Here is the stills version and the video version.

Some selects from that post:

Half soft frost diffusion

Half soft frost, one of my favorite diffusions because it's most efficient, getting you the most softening for the least loss of output available. Not surprisingly,  that's what I use as the front face in Airbox Inflatable Softboxes.

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