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For digital photography, ISO refers to the sensitivitythe signal gainof the camera's sensor. The ISO setting is one of three elements used to control exposure; the other two are f/stop and shutter speed.With film cameras, using a higher ISO film, such as ISO 400 to 1000, often resulted in noticeable grain.

JPG is great for photos. It supports RGB, Grayscale, and CMYK. It can reveal an unlimited number of colors in a 16-bit data format. Unlike other file formats (e.g. GIF), JPG can handle color gradation smoothly.

In general, there is no big difference between JPG and JPEG images.JPG, as well as JPEG, stands for Joint Photographic Experts Group. They are both commonly used for photographs (or derived from camera raw image formats). Both images apply lossy compression which results in a loss of quality.

The JPEG is a digital image file extension given its acronym from Joint Photographic Experts Group. It is a popularized file type due to its high standard of quality and easily downloadable size. JPEG files undergo compression which keeps sizes manageable but lowers the resolution of the image.

ISO (International Organization for Standardization) is an independent, non-governmental, international organization that develops standards to ensure the quality, safety, and efficiency of products, services, and systems.ISO standards are in place to ensure consistency.

There are actually no differences between the JPG and JPEG formats. The only difference is the number of characters used. JPG only exists because in earlier versions of Windows (MS-DOS 8.3 and FAT-16 file systems) they required a three letter extension for the file names.jpg extension, on both Windows and MACs.

Description. Comparison of two images taken at different ISO settings on a digital camera. This is a crop of a small section of each image displayed at 100%.