Believeable3D, I'm with you all the way there, but it seems that most confusion stems from exactly  that scenario: how many pixels to render for a given output.

For example, a good many people get fixated on "dpi", thinking that setting it to 300 is a magic switch that automatically invokes 'print quality' renders.

I encounter this every day (I run a print shop) and it drives me up the wall. The number of times I've told a customer that their 600 x 400 pixel digital images just aren't good enough for printing full page (or a double-page spread, god help us), only to have this countered with: "but it's 300 dpi!" is incredible.

So it's one of my bug-bears. If I see someone talking just of 'dpi' or 'ppi' I feel compelled to make them think about what it means.

---

Windows 10 x64 Pro - Intel Xeon E5450 @ 3.00GHz (x2)

PoserPro 11 - Units: Metres

Adobe CC 2017