Depth of field is a frequently misunderstood subject, particularly when it comes to what actually affects it and how it changes based on your technique. This awesome video will show you everything you need to know about the physics behind depth of field.
Coming to you from Gerard Undone, this great video will teach you all about depth of field and what actually affects it, while showing you an easy way to think about the physics behind it. There's quite a lot of misinformation out there regarding how depth of field works and what actually affects it, and having a working understanding of it is crucial to operating as a photographer and employing your technical knowledge in a way to helps you achieve the artistic results you envision. In the video, you'll hear him talk about the entrance pupil. This is the image of the aperture as seen from the front of lens (also known as the effective aperture); you can think about it as the aperture after being affected by the magnification of the lens elements in front of it. It's a great video that should really help you better understand a commonly misunderstood subject; check it out!