Samsung PL170 User Manual (user Manual) (ver.1.0) (English) - Page 120

Glossary JPEG (Joint Photographic Experts Group) A lossy method of compression for digital images. JPEG images are compressed to reduce their overall file size with minimal deterioration of the image resolution. LCD (Liquid Crystal Display) A visual display commonly used in consumer electronics. This display needs a separate backlight, such as CCFL or LED, to reproduce colors. Macro This feature allows you to capture close-up photos of very small objects. When using the macro feature, the camera can maintain a sharp focus on small objects at a near life-size ratio (1:1). Metering The metering refers to the way in which the camera measures the quantity of light to set the exposure. MJPEG (Motion JPEG) A video format which is compressed as a JPEG image. Noise Misinterpreted pixels in a digital image that may appear as misplaced or random, bright pixels. Noise usually occurs when photos are shot with a high sensitivity or when a sensitivity is automatically set in a dark place. Optical zoom This is a general zoom which can enlarge images with a lens and does not deteriorate quality of images. Quality An expression of the rate of compression used in a digital image. Higher quality images have a lower rate of compression, which usually results in a larger file size. Resolution The number of pixels present in a digital image. High resolution images contain more pixels and typically show more detail than low resolution images. Shutter speed Shutter speed refers to the amount of time it takes to open and close the shutter, and it is an important factor in the brightness of a photo, as it controls the amount of light which passes through the aperture before it reaches the image sensor. A fast shutter speed allows less time to let light in and the photo becomes darker and more easily freezes subjects in motion. Appendixes 119