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5 Terms Every Photographer Should Know

By: monk3ybidzness -- Oct 01, 2008 22:24:08 Category: Art and Photography

Photography can be a sea of terms that may take a long time to understand. Like any industry, knowing the “lingo” is important to es tablish credibility and talk with other photographers. To help, we’ve compiled 5 terms that every photographer should know: 1. Aperture The simple definittion: Aperture measure how open your lens is. It controls how much light goes into the lens. Aperture is measured f stops, with your average lens running usually from f/22 to f/1.4. (The larger the number, the smaller the aperture.) For a more in depth look, make sure to check out our Aperture article here: http://hyperphocal.com/?p=99 . 2. Depth of Field Depth of field is the area of focus at a given f stop. What this means is the part of the image that is in focus. Depth of field is used to enhance an image and give focus on a given subject. This is what really makes the different between DSLRs and point-and-shoot cameras - the ability to focus on a specific subject and blur the rest. For more info, check out our Depth of Field article here: http://hyperphocal.com/?p=43 . 3. Focal Length The focal length is the actual physical length of the lens. The longer the length, the further you can shoot. The shorter the length the wider angle of view. Focal length is represented on a lens by the “50mm - 135mm” numbers on the lens. In this particular instance, it means the lens has a focal length of 50mm to 135mm. Remember - bigger isn’t always better, and if you are only bringing one lense with you, bring one that is appropriate to what you are shooting. f/ 32 - narrow aperture and slow shutter speed f/ 5 - wide aperture and fast shutter speed 4. Circle of Confusion The circle of confusion describes the point where the smallest image element can retain identifiable detail. This is usually measured in millimeters and tends to run from .005mm to .020mm depending on the camera. Often, the circle of confusion is too small to notice by the human eye, as it is only capable of seeing to approximently .01in or .025mm. What the circle of confusion does do, however, is create the sharpness by focusing light rays to bring detail to the image. 5. Dynamic Range Dynamic range is the relationship between the darkest point and brightest point in any given photo. The larger the dynamic range, the more contrast is in your photo (the blacker the blacks, and the whiter the whites.) If you have a small dynamic range, you have a low contrast image with an even exposure. If you have a High Dynamic Range photo, you have taken three different exposures, with different dynamic ranges and have fused them together to make one photo.

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