The system being used is Dupont Nason with 4:1 clear.
And yes I know using 4:1 clear is just asking for problems, but I've used it befor with good results
Trust me, if it were up to me I would only use Dupont Chroma series or HOK all the way
But I gata make money, and it is the quick inexpensive jobs that are the most popular around here.
I give my "customers" the choice of what products to use, and always recommend the high end stuff, but all they see is the price deference.
But then again, like I said before........For being a low end product, I am very pleased with the results I have had with Nason in the past, and it is the only low end product I would use.