Shooting wide open makes use of the aperture at its widest and quickest f-stop, normally f/1.four to f/2.8. A nifty-fifty is a 50mm normal lens with a maximum aperture of f/1.8 or bigger. Fast glass is a lens that can stop right down to a “fast” aperture, particularly Photograpy News f/1.four to f/2.eight. Overexposed areas in your image that have received plentiful gentle are “blown out,” as all detail is missing. Pixel means image factor, and every digital image comprises them.