Canon's LH-DC70 Lens Hood for Canon G1 X
is a dedicated lens hood designed for use the Canon G1 X camera. Lens
hoods are primarily designed to prevent unwanted stray light from
entering the lens, by extending and shading the end of the lens. A
dedicated lens hood is designed to perfectly match the specific focal
length of the lens it was designed for. In addition, since the end of
the lens is extended, you also get the added benefit of some extra
protection from accidental impact.