The basic components of a DSLR are
described below. (Most of the components in a rangefinder are also found in a
DSLR.)
Lens, Aperture, Shutter, Digital image sensor,
Memory card, External flash
Lens
A lens is a series of sophisticated
elements, usually glass, constructed to refract and focus the reflective light
from a scene at a specific point—the digital image sensor.
