Ключевые слова: aperture, blades, blurred, camera, chart, cinema, circles, close, coating, depth, diaphragm, digital, dslr, electronics, equipment, extention, film, flare, focal, frame, frequency, gear, glass, image, length, lens, macro, optic, photo, picture, printable, procedure, production, professional, screen, shutter, technology, test, tool, video, wide, zoom,