aperture stop Directory References Discover 7 Everyday English Idioms and Where They Come From Poker Hands Ranked 7 Drugs that Changed the World Ten Days That Vanished: The Switch to the Gregorian Calendar What Is the Emoluments Clause? Why Do Some Cicadas Appear Only Every 17 Years? Water Fluoridation: Just the Facts Contents aperture stop optics Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:description In aperture…the aperture is called an aperture stop. Thus, an aperture stop determines the amount of light that traverses an optical system and hence determines the image illumination.Read More