ADC2 Diffusor Cover / UV Filter - Cloudy

This is called the cloudy diffusor because you can hardly see through it.  It loses more light output than the clear diffuser but it does soften the light more with its greater diffusion.  It loses about 8 tenths of an f-stop compared to not using it at all.  However, it also spreads the light a lot more evenly over a considerably wider area.  

I do try to remind photographer that if you are using the Lumedyne Head as the primary light source outdoors and there are no walls or ceiling to bounce the light back onto your subject, then only by making the light source larger rather than more diffused will make the lighting effect "softer".  When indoors, those surfaces become reflectors and soften the lighting based on the percentage of light you bounce versus send directly at the subject.

This Diffusor Cover is the same as the cloudy or more dense version that was included with most Flash Heads when new.  They simply snap on to the front lip of the reflectors.  Because the reflectors are hand spun, it is not unusual for some to fit tighter or loser than others.

As a natural by-product of the light going through the plastic, some of the UV (blue-ish) light is absorbed, so some people prefer this diffusor for the "warming" effect of reducing the UV end of the light spectrum.  The color temperature shift is less than 150 degrees warmer on a color meter but many photographers claim that the effect is more noticeable than that.

I have often gotten a free smile by telling people that it was keeping my light fresh and I wouldn't dream of using stale light at their event.  It's not a coffee can lid, but almost.