Digital Photography: Nikon D-90 External ControlsLesson 1Instructor: Ms. Davis

How an SLR camera works

In an SLR (single lens reflex) camera, you see the actual image that the sensor will see. The camera has a slanted mirror positioned between the shutter and the lens, with a piece of glass and a prism positioned above it. The image bounces off the lower mirror on to the glass, which serves as a projection screen. The prism's job is to flip the image on the screen, so it appears right side up again, and redirect it on to the viewfinder window.Pressing the shutter, you hear the click of the mirror flipping up, getting out ofthe way to expose the sensor or film.

1 - 4-element lens2 - Reflex mirror3 - Focal-planeshutter4 - Sensor5 - Matte focusingscreen6 - Condenser lens7 - Pentaprism8 - Eyepiece

How light enters into the camera

Nikon D-90 (back)

Nikon D-90 (top)

Nikon D-90

Automatic Exposure Modes

Advanced Modes

Hands on break-Let’s get familiar with the digital camera!1) Get out and take some pictures. Familiarize

yourself with the automatic exposure modes (portrait, close up, sports and landscape) and if you are daring you can try the advanced modes for this assignment (P, A and S only.)