In PLANET-4516 we fixed the odd Zoom for the Gallery block (Slider style), but noticed that in some cases images also get zoomed in the carousel header block, both styles.

So we should investigate why and where this happens, what the zooming expected behaviour is and (after) make sure the Acceptance tests of PLANET-4585 respects our criteria.

Consult wmorrisj for expected behaviour on image zooming and rendering + (if necessary) update the handbook - Design specs section