Note the F-Stop field: I’m not sure what it’s used for, but it doesn’t set the actual F-Stop of the depth of field effect. It doesn’t matter what you add here for the effect to render. Speaking of rendering: if you press F12 now to do a quick render, you’ll be disappointed to see that no depth of field effect is being produced.
Step 1 - Understand Depth of Field and Aperture. Depth of field is important to understand before jumping in and using it as a tool to create different images. Depth of field is created in the camera through the differing use of aperture. Aperture is the setting that controls how far open the lens gets when an exposure is taken.
The depth of field is a measure of the thickness of a plane of focus. As the magnification increases, the depth of field decreases. At low magnification you might be able to see the entire volume of a paramecium, for example, but when you increase the magnification you may only be able to see one surface of the protozoan. There are 3 ways to do this: The physically-correct DOF would require multiple renders of the scene. Cameras have depth-of-field because they are not really a pinhole model. Instead, they have an aperture that allows light in within a certain diameter. This is equivalent to taking a pinhole camera and taking a lot of pictures within that Depth of field is directly controlled by the size of the aperture. More depth of field (more objects in focus) can be achieved by having a smaller hole (high f-stop number), and less depth of field is achieved with a larger hole (low f-stop number). If you have an SLR, you should be able to set the camera to “Av” mode, which allows you to

The way that we control the Depth of Field is through the use of the camera’s lens aperture. The lens aperture – and how wide we open it – determines how much light reaches the camera’s sensor. These 2 images illustrate just how Aperture affects Depth of Field. Aperture set at f2.8. Aperture set at f11.

tom7fdk.
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    • how to do depth of field