What the F-Stop!

What is this f-stop that camera nerds talk about, and why does it come up when explaining why my phone camera isn’t as good as their very expensive camera?

Focal-STOP AKA f-stop is the “aperture” opening of a camera lens, which allows light to come in. Clear as mud right? For years people told me the F-stop or Aperture (why does it have two names just pick one) is about how much light the camera lets in. They said it like it means something and keep repeating it over and over again because the first 99 times you said it didn’t sink in but the 100th time… I’m not still mad about it…..

Part of the confusion must be because it has two different names and then talking about the numbers being fractions even though the camera shows whole numbers. I don’t know why it’s in whole numbers vs the factions I can only assume it’s because most people hate fractions or because on the analog camera it was easier/clearer to show whole numbers.

Finally, on my second photo trip, it was explained to me and the clouds parted to illuminate my teacher with angels singing a heavenly song. The f-stop/aperture is about focus, the lower f-stop number for example 3 means the camera is only focusing on 3 points. A low f-stop creates photos with great detail on one item, like a person or flower, but the background is blurry. A high f-stop, like 20, creates 20 focal points in the photo, so the whole picture is in focus.

The f-stop is 5.6 on this photo, see how the background of grass is just a green blur.
The f-stop is 22 on this photo, see how the whole photo seems to be in focus.

You now know what the f-stop is, which is half the battle, but how do you use it? On most cameras there are preset or automatic modes labeled A, S, P, and M. The A is the aperture which is the f-stop, again I don’t know why it’s f-stop everywhere else but aperture to select the mode. The aperture mode lets you change the f-stop number and the camera adjusts all the other elements around the f-stop number you select. So go forth and use your F-stop…it just sounds like a dirty word doesn’t it??

Published by JMP traveler

I’m a world traveler and an amateur photographer, to date, I've visited six continents and twenty seven countries. Due to bills (and a desire to eat), I am forced to work a mundane nine to five job to pay for my true passion. This blog is a way for me to share my crazy creative side, to share my travel photos with cheeky stories, travel tips, or details on how the photo was taken. Come join me as we travel the world together, without having to leave the house or get out of your PJs.

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