#separator:tab #html:false #tags column:4 Aperture The opening in a lens that lets light in photography-terms f-stop A number describing the size of the aperture; smaller number means bigger opening photography-terms Shutter speed How long the camera's shutter stays open photography-terms ISO How sensitive the camera sensor is to light photography-terms Exposure The amount of light that reaches the sensor photography-terms Exposure triangle The balance of aperture, shutter speed and ISO photography-terms Overexposed Too much light, picture too bright photography-terms Underexposed Too little light, picture too dark photography-terms Depth of field How much of the picture is in sharp focus from near to far photography-terms Shallow depth of field Only a small part is sharp, background blurry; made with wide aperture photography-terms Deep depth of field Most of the picture is sharp; made with small aperture photography-terms Bokeh The soft blur of out-of-focus lights in the background photography-terms Focus Making the subject look sharp photography-terms Autofocus The camera chooses focus automatically photography-terms Focal length Distance from lens to sensor in millimeters, deciding how zoomed in the view is photography-terms Wide-angle lens Lens that captures a wide scene photography-terms Telephoto lens Lens that brings faraway subjects closer photography-terms Zoom lens A lens with a changeable focal length photography-terms Macro lens Lens for extreme close-ups of small things photography-terms Fisheye lens An ultra-wide lens that bends the picture into a bubble look photography-terms Fast shutter speed Freezes motion photography-terms Slow shutter speed Blurs motion and lets in more light photography-terms Motion blur Streaks caused by movement during exposure photography-terms Panning Moving the camera with a moving subject to blur the background photography-terms Long exposure A slow shutter for light trails or smooth water photography-terms White balance Adjusting colors so white looks white under different lights photography-terms Flash A burst of light to brighten a scene photography-terms Natural light Light from the sun photography-terms Golden hour Time just after sunrise or before sunset with warm, soft light photography-terms Blue hour Time just before sunrise or after sunset with deep blue light photography-terms Backlight Light coming from behind the subject photography-terms Silhouette A dark shape of a subject against a bright background photography-terms Tripod A three-legged stand that keeps a camera steady photography-terms Viewfinder The window you look through to frame the picture photography-terms Sensor The part of a digital camera that records light photography-terms Megapixel One million pixels, a measure of picture detail photography-terms Pixel One tiny dot of a digital image photography-terms Resolution The amount of detail in an image photography-terms RAW An unprocessed image file with lots of data photography-terms JPEG A common compressed image file format photography-terms DSLR A digital camera with a mirror and viewfinder (single-lens reflex) photography-terms Mirrorless camera A digital camera without a mirror box photography-terms Composition How things are arranged in the frame photography-terms Rule of thirds Placing the subject along lines splitting the frame in thirds photography-terms Leading lines Lines in a scene that lead the eye to the subject photography-terms Framing Using objects in the scene to make a frame around the subject photography-terms Symmetry Matching halves in a photo photography-terms Close-up A picture taken near the subject photography-terms Wide shot A picture showing the whole scene photography-terms Portrait orientation Taller than wide photography-terms Landscape orientation Wider than tall photography-terms Aspect ratio The width compared to the height of a picture photography-terms Crop Cut away the edges of a picture photography-terms Contrast (photo) The difference between light and dark areas photography-terms Saturation (photo) How strong the colors are photography-terms Candid photo A natural photo of someone who is not posing photography-terms Selfie A photo you take of yourself photography-terms Photojournalism Telling news stories with photographs photography-terms Daguerreotype An early photograph on a metal plate from 1839 photography-terms Camera obscura A dark room or box with a tiny hole that projects an image photography-terms Ansel Adams American photographer famous for black and white landscapes of Yosemite photography-terms Dorothea Lange American photographer who took Migrant Mother in 1936 photography-terms Instant camera A camera that prints the photo right away photography-terms Black and white photography Photos with no color, only shades of gray photography-terms