After learning about the history and science of lenses, and gaining some knowledge about the properties of modern lenses, it’s time to take a deeper look at depths of field and how it’s affected by sensor size.
Kick back as John Hess of Filmmaker IQ takes us on a 17-minute long journey through the optics, the terms and the calculations that will help you understand how depth of field works once and for all.
Beginning by defining depth of field (DoF) and how deep and shallow DoF vary, going on to explain how it is affected by the aperture, and explaining the circle of confusion, this is another excellent video you should definitely take the time to watch.
Other topics such as crop factors and lens equivalency and how resolution affects DoF are also covered and any photography newbie should learn these things, while many professionals could probably do with a refresher.
While it’s true that you don’t always need to know why or how something works to get the results you want, some of this information can come in very handy at times.
If nothing else, you can use it to confuse your clients when they start talking about how they can get the same photos as you since they bought a similar camera.
After all, some people claim the hot trend for 2016 is to refrain from hiring professional photographers.