I've seen DPI explained in two ways. 1) Below is claiming 5 DPI (which is 5^2 pixels per inch)... and 2) where below would be considered 25 DPI. Which is correct? : r/Printing
What Is DPI & What Does Dots Per Inch Stand For?
Resolution Guide - Montclair Photo
Printer DPI explained – Photoopia
300 DPI Myth | What Are DPI, PPI & LPI | Printing for Photographers - YouTube
What Does DPI Mean? - Handy Indie Author Guides by Old Mate Media
Print Resolution and DPI Explained - Expert Labels