NEF files are the Nikon RAW format.  Canon and the others will have their own RAW format, which might have the extension RAW or something else; however, they essentially work the same.
RAW files are not compressed, which allows you to ultimately print them bigger with better quality than JPG files.  For example, I can print […]

Lens flare is a bright light that causes undesired artifacts in your picture, which is usually a polygonal shape like starbursts, circles, or rings in a row across the image. It can also be in the form of a glare across the whole picture, which reduces contrast. The shape of the lens flare is […]