just noticed, and tried the above setting that i found at the bottom of the 'render as' selection.
can't say i can see any difference, in either pic, file size, etc., but i'm working on a series of paintings at the moment, so there's little movement. haven't got any head footage, to play with at the moment, nor horses, which i'm really interested to know if they look better galloping in HQ or not - they certainly DO look better in hd though ;-)
leslie