Lecture 16: Camera & Lenses Cont. (18)

In lecture, Professor Ng talked about how, depending on whether the lights are in front of or behind the focal point of the image, the heart-shaped bokeh could be right-side up or upside down. He also in the next slide discussed how the bokeh can vary slightly depending on where in the image it is. However, I was wondering if the bokeh could be manipulated to be a lot more variable depending on the location within the photo, like a heart in the top-left and a square in the bottom right. Perhaps this could be accomplished if we etch out multiple holes instead of a single heart-shaped hole? Or is it impossible?


Although the heart-shaped lens-cover produces a neat feature with the heart-shaped bokeh in the background, I wonder how this affects the amount of exposure that hits the subject/main focus of the picture.


@andrewhuang the easiest way to think about this is as a shaped blur kernel on out of focus parts of the image. Changes in this blur kernel across the image are much harder to model, but the study is called Fourier Optics if you want to learn more!

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