How do Depth of Field and Circle of Confusion relate to each other?

Technical Level: Intermediate-Advanced  
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How do Depth of Field and Circle of Confusion relate to each other?

This is an advanced subject. You should have completed lessons DP-111C and DP-112C before trying to apply the information contained in this blog post.

The size of the camera sensor, the focal length of the lens, aperture size or f stop and the distance from the camera to the focus point all have an impact on the available Depth of Field (DOF).  All of these issues work together to either create a broad flat DOF curve or a steep DOF curve.

Photography and Cooking

Technical Level: Beginner      
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Photography is a Technical Artform. The technical and artistic elements of photography are intertwined and we must become competent in both to intentionally create great images. Some students are apprehensive about the technical side of photography and have a “brain freeze” when the word Technical is used.

Photography

The technical elements of photography are no more difficult to grasp than are the “technical” aspects of preparing food. Cooking uses the term cup to measure how much flour to put into your pancake batter. Photography uses the term f stop to represent how much light is entering the camera. Recipes use time in minutes to tell you how long to bake your biscuits. Cameras use Shutter Speed (normally measured in seconds) to tell you how long the camera sensor is exposed to light.

“That was a LUCKY shot”

Technical Level: Beginner      
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Have you ever had someone tell you “You must have a really good camera” or “That was a lucky shot.”

I don’t think the people who make these comments are intentionally rude but it appears they aren’t very knowledgeable as to what it takes to create a great image. How do we politely educate them? Do we say “Let’s both get the same camera and see who can take the better photo?” Or to take a different approach, the lucky shot theorist might say that Serena Williams has won so many tennis championships because she has a really fantastic tennis racket. Or a great chef must be able to cook so well because he or she has a really nice set of pots and pans.