Scaling to fake camera zoom effect?

[RootBeerKing]

I've been wondering how might a camera zooming effect, like the ones found in old 2D fighters, be done using sprite/tile scaling in Tilengine? What would be the proper way to incrementally increasing/decreasing the scale of tilemaps and sprites to fake a camera zooming in and out? Is that sort of thing possible with the current way scaling works in Tilengine?  

Any insight on this would be appreciated. 

Cheers