Dslr stands for digital single lens reflex A dslr is a digital camera that uses mirrors to direct light from the lens to the viewfinder Exposure is the amount of light collected by the sensor in your camera during a single picture Too much light equals washed out and not enough light equals too dark The three primary controls your camera uses for exposure are aperture, shutter speed, and ISO Aperture is a hole within a lens, through which light travels into the camera body In photography, aperture is expressed in f-numbers These f-numbers that are known as f-stops are a way of describing the size of the aperture, or how open or closed the aperture is Small apertures increase the depth of field, bringing both the main subject and background into focus Large apertures soften background details Shutter speed, also known as exposure time, stands for the length of time a camera shutter is open to expose light into the camera sensor If the shutter speed is fast, it can help to freeze action completely If the shutter speed is slow, it can create an effect called motion blur, where the moving objects appear blurred along the direction of the motion Shutter speeds are typically measured in fractions of a second, when they are under a second The slowest shutter speed for handheld photography is 1/60 Anything lower than that should either be on a tripod or on a straight, solid surface Any slower handheld shutter speed begins to get motion blur and your photograph may be out of focus ISO is the level of sensitivity of your camera to available light The lower the ISO number, the less sensitive it is to the light, while a higher ISO number increases the sensitivity of your camera The component within your camera that can change sensitivity is called image sensor or simply sensor With increased sensitivity, your camera sensor can capture images in low-light environments without having to use a flash But higher sensitivity comes at an expense - it adds grain or noise to the pictures Bright and sunny, 100 iso Cloudy, 250 iso Indoors, 500 iso Night time without a flash, 1600 iso M-Manual control over aperture and shutter A-Aperture priority S-Shutter priority P-Camera sets shutter speed and aperture Have the camera strap around your neck at all times Hold the camera by the lens and hand grip if possible- treat with care
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AuthorHi, my name is Enzo Borghetto and I'm a senior at Rancho Buena Vista High School. Archives
June 2017
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