[jp10]

Thanks for the clarification and insight.
I was not envisioning a heavy blur, maybe anywhere from 6% to 20? Just enough to blend the ground pixels. It would also produce an visual processing depth effect by having the background blurred and leave the vehicle/troop/gun at the current style of render. Trick the eye into a 'closer is focused/distant is unfocused visual effect.
So basically zooming in is just magnification of an BMP with no resampling or increase in PPI. Interesting. I shall have to think on this.