Yeah, it's situational, within commonsense. For searching a room, yes, I'd get specific actions from PCs to answer their questions, because the consequences are pretty clear (eg, they do or do not find the secret room, fall into the pit, trip the alarm, or whatever).
But if they climb atop a hill to get a look at the surroundings, they typically just see what they see under the circumstance, no need to specify turning their necks or looking at their map or whatever. It's fine to assume they're looking in all directions and getting their bearings once up there. If something specific comes up and it matters ("What kind of birds are those circling that hill?"), then prompt for more info ("How can you tell?" "We've got a spyglass." "Okay, then...").
Making sure a player is master of their PC's every action is important, but I never want to stray past that into pixel-b##ch territory. (Been there, done that.)