What describes the amount of light allowed to pass through a camera lens?

More Questions:

What company introduced Spam to the market in 1937?

What event occurs at Walthamstow Stadium?

What are the three primary ingredients in a standard Grasshopper cocktail?

What does a "caliber" measure?

What democratic senator that is a cousin of actress/comedian Amy Schumer?

Which famous adventure story features an Inn called "The Black Spot"?

Which continent is Mauritania a part of?

Topeka is the capital of which US state?

What comedic duo starred in the movie "Stir Crazy"?

What show is "The end of something simple. And the beginning of everything else"?

What actress shaved her head for her role in the movie "V for Vendetta"?

When was the Emancipation Proclamation enacted?

Wayne Brazel shot and killed what Western figure?

Who was kidnapped on the night of March 1, 1932?

Who was Joe’s co-creator for the character of Superman?