Cultures all over the world incorporate cumin into their cuisine, and it's often mixed with other spices for curry and taco seasoning. These recipes show how cumin's earthy flavor enriches everything from guacamole to vegetables to meat.
As with the shutter speed, the aperture also affects the sharpness of your picture, but in a different way. Changing the aperture changes the depth of field, the depth in a scene from foreground to background that will be sharp in a photograph.
The aperture of a lens is the opening in the diaphragm that controls how much light is allowed to reach your focal plane (film or sensor). The aperture is usually rated as a fraction of the focal length, hence the f/x.y nomenclature. The wider an aperture is, the more light it allows through, and the smaller the number under f/ is.