What is the origin of the letter “f” in “f-stop”?
First things first: We realized we should learn the definition of “f-stop” before setting out to find the origin of the term. We headed to the Yahoo! Education’s Reference section where we searched the American Heritage® Dictionary for “f-stop” and found the following definition: A camera lens aperture setting that corresponds to an f-number. Okay, so now we knew what an “f-stop” was, but what about the origin of the f in f-stop? After a bit of research, we found several intriguing hypotheses about the origin of the term on the easy-to-search photo.net forums. One post references a biography of Ansel Adams, and attributes the italicized f notation to Adams himself, circa 1932. Sometimes f-st
