>>3640308Not talking about flare. Moon is reflected light source. It's lens that gives up additional glow.
Look:
>>3627361,
>>3625430Certain lenses like canon 14mm f/2.8l usm will have it controlled to a minimum. Night photography with it will be crisp and surgical. While you have sigmas 14mm dg hsm art that will be the opposite with glow around light sources. Eliminating glow is not necessary beneficial in all situation, then again you can get it back via filters, so lens with good characteristic is usually more versatile.