Learn ISO, Shutter Speeds & Lens Openings

Learn what ISO, Shutter Speed and Lens Openings do. See what their numbers represent visually and understand how they change your photograph as you adjust them.

Download this card to your cell phone, tablet or computer to view or print it out on your inkjet printer or at a photo lab as a 4x6 print.

Download Exposure Card Today

Learn ISO, Shutter Speed & Lens Opening Settings

Learning exposure settings can be confusing. This quick reference card helps show you visually what each setting does and how it changing them changes your photographs. I have had people confused about which setting does what and why the numbers go the wrong way.

This quick reference guide is a mini workshop on a 4×6 teaching visually what the settings look like and what they do to your photograph as you change them. Seeing something visually makes it easier to understand and remember. *After downloading look at page two which has photo examples of the exposure settings.

ISO: It shows how a lower ISO is less sensitive and needs more light, (a bigger bucket to fill), and higher ISO needs less light, (a smaller bucket to fill.) Filling a bigger bucket takes more time and a smaller bucket takes less time.

SHUTTER SPEEDS: Shutter speeds control stopping action and preventing camera movement. They are in fractions of a second and a faster the fraction stops faster action. You also need a minimum of 1/30th of a second to prevent camera movement and image blur when hand holding a camera.

LENS OPENINGS: With lens openings the larger the lens opening the smaller the number which can be confusing. Seeing the lens openings visually with their number next to them helps you see visually the size of opening and makes it easier to remember them.

A larger lens opening helps blur the background behind the subject and a smaller lens opening helps make it sharper.


If you would like some help understanding ISO, Shutter Speed and Lens Opening settings we also have an EXPOSURE MADE EASY Workshop online. We have an amazingly simple way of explaining exposure that is quick and easy to learn. Normally $129. it is on sale for only $69.

You can download this workshop to your computer and review it any time you want. There is also a gift version of the workshop where we send you an email with a download link in it that you can forward to the person you are giving it to.

Learning how exposure works before taking a workshop will make your in person time even better. It is called flipping the course in college where professors send students the material to go over and do the assignments for it before going to class. It makes the class time more effective.