DSLR (Digital Single-Lens Reflex) and mirrorless cameras both use digital technology to capture images, but the way they achieve the end result is different.
In a DSLR camera, light enters the lens and is reflected by a mirror onto a pentaprism, which then sends the image to the viewfinder. When the picture is taken, the mirror flips up, and the image is captured by the image sensor and stored on a memory card. This design allows the photographer to see exactly what the lens sees through the viewfinder, providing a true optical preview of the shot.
In contrast, mirrorless cameras do not have a mirror or a pentaprism. Instead, light goes straight through the lens and onto the image sensor, where it is captured and stored on a memory card. The preview of the shot is shown on an electronic viewfinder or LCD screen.
Both types of cameras have their pros and cons. DSLRs are often preferred by professional photographers for their optical viewfinders and ability to change lenses, but they tend to be bulkier and heavier than mirrorless cameras. Mirrorless cameras, on the other hand, are often smaller and lighter, and offer more advanced features such as high-speed autofocus, more advanced video capabilities, and instant image preview.
Ultimately, the choice between a DSLR and a mirrorless camera comes down to the individual's specific needs and preferences.