1
vote
2answers
77 views

DPI/PPI resolution for product zoom images

I'm working on an ecommerce site and I am trying to figure out at which resolution to save product images. We usually go for 72DPI but I believe now we should be using PPI, but also that to account ...
2
votes
1answer
125 views

Why do applications need to make changes for Retina displays?

From what I understand, Retina displays are simply a screen with a high PPI (higher than that of your eye at "optimum viewing distance"). Why, then, do applications need to fix their interface to ...