I'm trying to refine my ability to emulate a technique I see quite often on Dribbble and throughout the internet really. I think in some cases this is done via actual printing (letterpress, engraving etc) but it seems likely that this is often just executed digitally as well.
A few examples are here:
the maroon arrowhead area:
Artist: Matthew Genitempo
the shadow in the chief's neck / ear area:
Artist: Patrick Moore
Basically it's a way to emulate an uneven ink density that would come from printing a large run with a stamp or plate that is running dry. I'm assuming that this is achieved through some combination of texture scans and layer filters, but I'd love to find a tutorial of some sort.
Of course, I've gone through some tutorials that pop up via a quick Google search but they usually utilize grain and noise filters and just end up looking way wayyy less convincing than the above examples.