Another way for me to describe how I perceive clarity vs imaging.. visually..
When looking at my living room from its entryway, I can clearly identify (image) where the coffee table is.. how far it is from the sofa.. where the palm tree in the corner of the room is.. where the throw pillows are on the couches.. the location of the paintings on the wall, etc. What I can also see are the minute details (clarity) in all these objects: the texturing of the sofa fabric, the grain of the paint on the artwork.. the shadows from the lamp that hit the palm..
Now.. if I wear my wife's glasses (which would blur my vision), I can still make out where objects are spatially positioned (where they 'image').. i.e. the couch is near the wall, the coffee table in the center of the room, etc... but I can't perceive detail (clarity) quite as well, i.e. the sofa fabric's texturing.. the palm tree's shadows.. the artwork's grain, etc.