Nikkor-N 24mm f/2.8 Non-AI is a compact, lightweight sharp wide-angle manual focus lens lens with metering prong capabilities with one row of f/stops. The 24mm proves to be an excellent lens for candid, architectural and other demanding photography applications. It's floating element technology ensures high performance and close range correction of image quality. The nine element optical construction move in a non-linear manner as the lens is focused enhancing aberration correction. High contrast is preserved at all apertures.