LOCALadk Magazine

52 Fall 2014 LOCALadk LongExposure Noise Reduction – This function helps reduce the level of noise that may develop in long exposures. This will also result in a doubling of the time your camera will need to process images in- camera. When shooting in continuous mode, it will also reduce your frame rate per second. High ISO Noise Reduction - This function helps reduce noise levels that develop at higher ISO's. Lenses The availability of quality lenses for all budgets has never been as great as it is today. The improvement in zoom lenses and all-in-one zoom lenses has been dramatic. However, the advent of these lenses has made many photographers lazy, because they do not think about what is happening to an image at different focal lengths. As focal length is extended: What is happening to the images depth of field? What effect is compression having on the image? Are the foreground and background merging? If handholding, do I need to increase my shutter speed to reduce camera blur? Lenses are typically defined by their focal length in millimeters. A wide angle lens would typically be between 12mm and 35mm. A standard or normal focal length lens would typically be between 40mm and 65mm. A long lens would be any one greater than 65mm. Today's zoom lenses can cover a wide range of focal lengths, with all-in-one zooms covering all of the above noted ranges. ( Many manufacturers make a 28-300mm lens.) Wide angle lenses provide a greater angle of view (approx. 114' – 62'), greater depth of field, closer focusing distances, and they exaggerate the size of objects positioned closer to the camera. Also straight lines located near the edge of the frame will become curved in the image. Normal lenses typically render a scene at an angle of view (approx. 47') similar to that of the human eye. Long lenses provide a narrower angle of view (approx. 36' – 5'), greater image magnification and shallower depth of field. They compress the scene, so both near and far objects appear closer to one another than Jambo Jipya School: I photographed three of the three hundred children attending the Jambo Jipya School located in Mtwapa, Kenya. The school provides education and two free meals a day to students from Pre-K through Grade 12.

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