DSLR - “Digital Single Lens Reflex”
-Exposure is the amount of light collected by the sensor in your camera during a single picture. If the shot is exposed too long the picture will be washed out. If shot is exposes too short the pictures will be dark. -Most cameras have light meters which measures the light in the given shot and set an ideal exposure. Three primary controls used for exposure are aperture, shutter speed, and ISO. (consider before taking a photo) Aperture in a camera - Aperture is a hole within a lens through which light travels into the camera body Is is easier to understand the concept if you just think about our eyes, every camera that we know of today is designed like human eyes. - Size of Aperture - Large versus Small Aperture - Aperture is expressed in f-numbers( for example f5.6). These f-numbers are known as “f-stops” are a way of describing the size of the aperture, or how open or close the aperture is. - smaller f-stop means a larger aperture while a larger f-stop means a smaller aperture. (example, f/1.4 is larger than f/2.0..) - Aperture basics Smaller apertures(high f/numbers ie f/22) increase the depth of field, bringing both the main subject and background into focus. - Large apertures (low f/numbers ie f/2.8) soften background details. - Depth of field ( DOF) is the distance to which objects behind and in front of the focal point appear to be in focus. Shutter Speed - Known as “exposure time”, stands for the length of time a camera shutter is open to exposure light into the camera sensor. - If the shutter speed is fast, it can help to freeze action completely. - If the shutter speed is low, it can create an effect called “motion blur” where moving objects appear blurred along the direction of the motion. - Shutter speeds are measured in fractions of a second, when they are under a second For example ¼ means a quarter of a second, while 1/250 means one Two-hundred-and-fiftieth of a second or four milliseconds. - The rule of thumb for shutter speed - The slowest shutter speed for handheld photography is 1/60. Anything lower then 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 - ISO is the level of sensitivity if 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 ss called “image sensor” or simply “sensor”. With increased sensitivity, your camera sensor can capture images in low-light environments without having to use flash. But higher sensitivity comes at an expense- it adds grain or “noise” to the pictures. - The General rule of thumb
M- Manual control over aperture and shutter A - Aperture Priority S- Shutter Priority P- Camera sets shutter speed and aperture How to hold a DSLR
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AuthorMy name is Natalee, I am a senior at Rbv, and I enjoy taking photos. Archives
May 2017
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