Yes, digital cameras absolutely use lenses.
Lenses are fundamental components of digital cameras, essential for capturing images. Their primary function is to focus light from a scene onto the camera's image sensor (like a CCD or CMOS sensor). Without a lens, the sensor would receive unfocused light, resulting in a blurry or unusable image.
Types of Lenses in Digital Photography
Digital cameras utilize various types of lenses depending on their design and intended use. The provided reference from Ricoh-imaging.co.jp highlights some common examples:
- Fixed Focal Length Lens: These lenses have a single, unchanging focal length. They are often known for their sharpness and can be found on cameras like the GR DIGITAL series.
- Zoom Lens: Unlike fixed lenses, zoom lenses allow the focal length to be continuously varied. This provides flexibility, letting the photographer change the field of view without swapping lenses. The reference mentions that CX series cameras use a zoom lens.
- Conversion Lens: These are accessory lenses attached to the camera's primary lens to alter its characteristics, such as enabling a wider angle or providing stronger telephoto magnification.
These different lens types cater to diverse photographic needs and styles, from capturing wide landscapes to zooming in on distant subjects. Understanding the lens is a key part of Digital Camera Basic Knowledge.
In summary, whether it's a compact point-and-shoot, a mirrorless camera, or a DSLR, a lens is a critical part of the digital imaging system.
