Aperture & Depth of Field

Yesterday we talked about aperture and its relation to depth of field. A small aperture will provide a large depth of field (everything in focus). A large aperture will provide a small depth of field (only certain parts in focus). 


However, there remained the question: Why does a small aperture provide a large depth of field and a large aperture provide a small depth of field? So here is the answer.


When you increase the aperture you are increasing magnification. When you magnify an image, only parts of it remain in focus. So, decreasing the aperture has the opposite effect. It lessens the magnification and allows more of the image to remain in focus.


How does a camera do this?


Here is a long but good article on how a camera works.


Hope this clarifies things a bit. Until next time!

Photo Assignment

Here are the handouts from yesterday covering camera basics and digital camera settings. I have also posted the photo assignment. Remember to email me 2 pictures you like and 2 pictures you don't like by Tuesday evening before class.

Camera Basics

Digital Camera Settings

Photo Assignment

Let me know if you have any questions!

Picture of the Week

Welcome!

Hello everyone! Welcome to the PCHS Photography Class Blog. You can use this space to ask questions, start discussions, and to get class information. Our class will begin Wednesday October 14th at 3:00 pm. We will be meeting weekly on Thursdays at the Green Bank Library after school. 


This space is intended to be a resource for you, so use it! I can post links to online resources, refer you to photographers you may like, answer questions about techniques, and more. 


Happy Blogging!