Digital Single Lens Reflex Camera

The basic operation of a DSLR is the same as a SLR. For viewing purposes, the internal mirror set at a 45 degree angle reflects the light coming through the lens up at a 90 degree angle into a pentaprism where the image is inverted so it can be seen through the viewfinder the right way up.

During an exposure, the mirror swings up, the aperture stops down to the selected size, and the shutter opens exposing the electronic sensor placed on the focal plane to light. At the end of the exposure, a second shutter closes back over the sensor, the mirror drops back into place, and the first shutter resets.

Learn more about the Digital Single Lens Reflex camera

Download the curious-eye PDF file of Basic Camera Controls


Learn more about the advantages of a DSLR camera

Camera Phones

We currently live in the age of the camera phone, taking and sharing photographs instantly and automatically with others across the globe.