Raster Display "Smoothing"

[BerndtNording]

I have noticed that images in a Raster Mosaic are smoothed in ArcMap and rasters in a file are not. This "smoothing" is a display function and I've seen it in other software like Erdas but I don't recall what it was actually called. So, I would like to know if I have any control over whether or not this "smoothing" is applied to a raster layer. There doesn't seem to be anything in the layer properties for it.

The image below is zoomed in enough to show pixel edges in the file raster, those edges are blurred away in the Raster mosaic, yet they are both the same resolution.

File raster:

Raster Mosaic: