The Exposure Triangle - Aperture
Now that we have learned a couple of the basics of photography in previous lessons... composition, leading lines, symmetry, we are going to jump in a little more about the pieces of the exposure triangle and gaining control over your photos.
The Exposure Triangle is composed of three different parts. The three parts of the Exposure Triangle are APERTURE, SHUTTER SPEED, and ISO and they all work hand in hand with each other to create the perfectly exposed photograph, or to make a photograph that fits your artistic vision. We will be going over each one of these in different lessons. This lesson will focus on the APERTURE side of that triangle.
The Aperture is defined as the space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera. You can think of it as the camera's eye. Much like our eyes, the aperture can open wide to let in more light or close to let in less light.
For this lesson we are going to take control of the aperture on your cameras. All DSLR's and most all point and shoot cameras have options to go into what is called APERTURE PRIORITY mode. Camera's will either have a dial you can turn it to with an 'A', 'Av', or it can be set through the menu.
Setting your camera into Aperture Priority mode will give you the control over your aperture opening, but the camera will then adjust the shutter speed and possibly your ISO automatically if you have it set to do that. Aperture F-Stops are kind of like your eye's pupil. The bigger it is open, the more light it lets in. A photo shot with a smaller aperture will have a slower shutter speed, so a tripod may be necessary.
Aperture will also effect your Depth of Field or how much is in focus. A larger aperture opening will create a smaller DOF while a smaller aperture will have most everything in focus. Using a smaller DOF, you can isolate your subject from the background of the image making it more pleasing to look at and less distracting. A larger DOF is great for landscape photography when you want everything in focus.
Fundamentals in Action
In this shot I used a large aperture to blur out the distractions in the foreground and background of what I was seeing. This crane was in a fence at the zoo. Shooting it with a large aperture opening, it caused a smaller depth of field that I was able to get the fence in the foreground as well as the background to blur enough to where you almost don't see it at all.
Then this image was shot with a very small aperture creating a big depth of field. In this way, I was able to get the sign in the foreground in focus as well as the huge rock formation. I lined it up enough to where the stopsign looked like it was posted on the rocks.
Using a large aperture in this image, I was able to isolate the single seed from the dandelion and just bring focus to it as it clung on. With the grass out of focus as it is, it created a pleasant background and contrast.
Then finally with this image, I used a very small aperture. I did this not to make sure everything was going to be in focus, but by having a small aperture it made the exposure time longer creating a blur effect with the water running through this rock.
For this lesson's homework we would like you to shoot 2 different photographs. Remember to use the techniques and things you learned from the previous 2 lessons.
For the first photo, find a subject and shoot with a wide open aperture. Take an additional image and show how a small aperture would not work with a larger Depth of Field.
With the second photo, use a small aperture to get everything in your image in focus.
Also in your post, let us know what you learned as you played with the aperture settings, some challenges you may have run into, and if you had anything that may help others as they learn in this photography adventure.
Pixel Perfect Lessons
Participate in the Official Pixel Perfect Lessons to achieve rewards. These lessons can be completed multiple times so that you can show your progression and earn more rewards for your hard work.
After completing the Official Pixel Perfect Lesson, place your lesson in the Submit Homework channel in the Official Pixel Perfect Discord.
The lesson will be "graded" by the teachers and a reward for the lesson will be established and set out.
After reviewing your homework lesson, the team will determine the reward based on the following criteria:
- Effort. If we can tell that you went out and created new content for the lesson, instead of recycling old material, you will earn more. The point is to actually use what you learn in the lesson to try and become better.
- Overall understanding and application of the lesson elements.
- Structure of lesson post and design.
Rewards will be as follows:
- 5 Pixel for an average post that meets the minimum requirements.
- 10 Pixel for a good post that shows some good elements to it, with good structure and photography or art.
- 15 Pixel reward is reserved to the exceptional posts that we feel the authors have gone above and beyond and truly taken the time take what they have learned and apply it and share it with the Whaleshares platform.
One thing to remember is that you can always complete the lessons multiple times to earn more rewards and improve your skills.
What is Pixel Perfect?
If you are just now hearing about the Pixel Perfect project and are unsure of what it is, I would suggest heading over to Introducing Pixel Perfect! for more detailed information.
Pixel Perfect is an educational system for the creative community that rewards you for your participation in the lessons. You will be rewarded based on the effort that you put into your "homework" and learn new techniques that will help you on and off of the Whaleshares platform.
Be sure to join the Pixel Perfect Discord to become part of our community so that you can turn in your assignments and stay up to date with all of the latest Pixel Perfect news. Join the Pixel Perfect Discord Server.