NSL Photography's™ Glossary of Photographic Terms - J

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JCII
Japan Camera Inspection and Testing Institute. The organization in Japan to monitor export quality of Japanese made cameras.

JPEG (JPG)
In computing and digital photography, JPEG (JPG) is a commonly used method of compression for photographic images. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality. JPEG files are considered Lossy files as they loose quality each time the are edited and resaved.

JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices It is the most common format for storing and transmitting photographic images on the World Wide Web. These format variations are often not distinguished, and are simply called JPEG.

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