Final answer:
The question involves matching camera parts with their functions: the lens focuses light, the iris controls light entry, the shutter determines light exposure time, and the viewfinder aids in composing the shot.
Step-by-step explanation:
The student's question involves matching each camera part to its function, focusing on the lens, iris, shutter, and viewfinder. Each of these components plays a critical role in photography.
Lens: The lens is responsible for focusing light from the scene onto the camera's sensor. It allows photographers to control the framing, perspective, and sharpness of the images they capture.
Iris: The iris (or aperture) controls the amount of light that enters the camera by expanding or contracting. Aperture settings can affect depth of field and exposure.
Shutter: The shutter determines the duration that the camera's sensor is exposed to light. Shutter speed can freeze action or create motion blur, impacting the overall exposure of the photograph.
Viewfinder: The viewfinder allows the photographer to see the scene they are capturing. It's a tool for composing the shot and can be either optical or electronic.
These components are essential for various shooting modes (auto, semi-manual, manual), affecting resolution and compression, and are influenced by different scene modes and techniques such as steady camera shooting and the rule of thirds.