To many, the circle of confusion is well named as it can be a tough subject to understand. In this video not only will I help you understand it, but I’ll show you why it matters.
What is it?
The circle of confusion defines the transition point in-between what appears acceptably in focus and what is out of focus. It works like this: take a point of light from in front of the lens. That light travels through your lens and it is focused down to the focal point. The focal point is where the light beams cross, or converge behind then lens. When the focal point falls on the focal plane, which is where the cameras sensor is located, that subject is in sharp focus, or what we call “critical focus.”
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Can you go deeper, I like this topic
Thanks- I’m glad you like it. I’ll look into expanding this video in the future – I appreciate the suggestion. Right now I’m working on getting the rest of the videos in the Camera Foundations done. 🙂
Great explanation, Ryan! As for the ways to correct the insufficiency of DoF, I’ve heard someone suggesting to focus in between subjects, which ties nicely with the subject of the vid.
Thanks. 🙂 Yep focusing in-between the subjects is another good way to solve the problem. The only catch with that, is that you now have to keep a close eye on two people- as they both now have a greater chance of going more out of focus. But as long as they don’t move a whole lot- that can be a great solution as well. Thanks for suggesting it. 🙂
what was the app that you used in this video?
Great question- Sorry I didn’t link to it. The App is called P-Cam.
Here is the link to the iPad / iPhone Version of P-Cam
Here is the link to the P-Cam website.
I don’t understand the bit about the circles of confusion becoming smaller on a larger screen. Surely if the screen gets larger the circle of confusion would be easier to spot and be larger because everything else is larger, for example the characters or background.