Photo Engineer
Subscriber
Interesting. Is there a specific "matte spray" you have in mind?
I tend to forget that, in my convoluted mind, matte often means "not mirror like." My favorite paper surface was the "glossy" version of Bergger VCCB papers.
For Ilfochrome, I would prefer a sort of ~not quite pearl/semi-gloss, if I was in a position to be choosy.
The hybrid color carbon prints made by Art & Soul are what I had in mind when I thought about a gelatin application. If anyone is interested, have a look at their website, and if you have a chance, do check them out in person. I have never seen finer prints anywhere, period. Unfortunately, they run about $1000 for about an 8x10: http://www.colorcarbonprint.com/
I have no specific spray in mind as there are several out there AFAIK. I also happen to believe that this is a Bad Thing To Do to this type of print.
PE