Components Of A Camera And Their Functions
August 18, 2022

As a photographer or videographer, knowing the intricacies of your camera is crucial to mastering your skills. You need to know everything about the camera, including its parts, types, and functions.

This knowledge of your camera increases the quality of your work and helps you identify the best camera. These are the essential components of a camera and their functions.


The viewfinder is an essential part of a camera. It is rectangular-shaped and located at the camera’s rear, allowing you to frame the subject you want to capture. There are the optical and digital viewfinders, and the latter displays various details such as your aperture, ISO, and shutter speed before you take a photograph.


A pentaprism is a mirror positioned at 45 degrees behind the camera’s lens. This mirror projects the captured light from the camera’s lens to the viewfinder. Before the invention of the pentaprism, photographers had to look down before taking a picture, but it only allowed them to take photographs at hip-level. Pentaprism fixed this issue and depicted SLR (single-lens reflex) cameras.

Built-in Flash and Flash Button

The built-in flash in cameras, when triggered, produce the burst of light that illuminates the object to be captured. It is permanently positioned on the top or front of the camera, and the flash flares only when you take a picture with the camera.

The flash button compels the flash to open before it is triggered. Pressing the flash button also allows you to set the flash exposure compensation, adjusting the flash’s intensity.

Lens Mount and Release Button

The lens mount is a mechanical fitting that attaches the lens to the camera. The lenses you use must match the lens mounting system of your camera to function correctly. Some manufacturers utilize proprietary mounting systems to ensure that the users use their lenses.

The lens release button loosens the lens mount allowing you to sever the lens from the camera. You can find this button at the front of your camera.

Mode Dial

The mode dial is a commonly used component of a camera. It’s a small cogwheel positioned on the top-right of your camera, and it switches between the different modes (methods of operating) of your camera. A camera can have automatic, manual, scene-based, and semiautomatic settings.

Focusing Screen and Condenser Lens

The camera’s focusing screen is the glass surface onto which the mirror projects an image. It allows you to achieve several focus effects like high and sharp contrast shots, bokeh and blurs.

The condenser lens consists of two convex lenses that match. It uses a straightforward method to correct color aberrations fringing, and other common issues with a traditional camera lens.

Shutter and Shutter Button

A shutter is an opaque piece of plastic or metal involved in controlling the amount of light getting to the camera sensor. The length of an opened shutter determines how the exposure will appear.

You can trigger the shutter by using the shutter release button and adjusting it with the shutter speed setting. The shutter button also activates the autofocus system of the camera when half-pressed.

The other parts of the camera include the grip, digital sensor, display, camera’s electronics, remote control sensor, autofocus system, aperture, relay and reflex mirror, main dial, hot shoe, zoom elements, and the batteries.