Background image blurry

Question

I like using an empty with an image as a refrence, but the images display blurry when zoomed in.

Ideally, I would like it to look crisp like this:

Is there something in the user preferences or somewhere else to do this?

Answer 1

It might be too late but in Blender - Viewport settings, if you ever limited the Textures size, then you might want to increase it back. This should fix the blurry images.