Maybe add a sentence to explain that the position of the object doesn't matter that much, but only the distance to the camera is important? Also see my note at the 'distance' property. Then again, maybe position is important once you start tilting the lens? It may be nice to explain this in the documentation.

A camera has a focal plane, not a focal point.

What sets it apart from the "not high quality"? Why would someone not want high quality?

You can't use both, you can either one or the other. Furthermore, I don't think you set it for the render/preview, but for the camera. Of course you can describe that both the render and the preview use the DoF settings, but that's a separate sentence. Also it feels more like a sentence that belongs to an introduction, and not this list of properties.

Please add something like "depending on your choce at .,,", so that the reader knows why you mention two different things in the same sentence.

As a part-time professional photographer, I have no idea what "the aperture effect" is, so it's doubtful that other people understand this. Since the "amount of blur" is a concept already used, "aperture effect" must refer to something else, and then there is "distortion" which also hasn't been used so far. Even the tooltip specifies "anamorphic lens bokeh", which makes it much more concrete.