Assertion: lens | /r/HasProperty | curved
Facets:
value: like this magnifying glass
type: MANNER
value: slightly
type: DEGREE
Source sentences:
text: Light entering the lens travels in a nearly straight path to the film or sensor (though all lenses are slightly curved).
text: When it's curved on both sides, like this magnifying glass, the light goes in one side, gets bent and slowed, and comes out the other side a little larger, meaning that what you're looking at appears bigger.
text: Because the lens is curved, the centre of the photo is magnified slightly more than the edges.