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Depth of field effects caused by long focal length lenses (preferred in portraiture for this reason), called "bokeh". In this case the light is coming into fro
by skylanh 6y ago
Depth of field effects caused by long focal length lenses (preferred in portraiture for this reason), called "bokeh". In this case the light is coming into front lens elements, and it doesn't appear to be corrected for distortion, and then not uniformly focused onto the surface of the camera's sensor. Potentially this was for a Imax dome.
So, no, this doesn't have anything to do with smart phones.
In ye' olde times, induced background blur would have been a gaussian blur in software. I'm not sure what special magic they do today. https://arxiv.org/abs/2006.05698 https://arxiv.org/abs/2006.05698 suggests things have moved on.
- steerablesafe 6y ago> In ye' olde times, induced background blur would have been a gaussian blur in software In any case, gaussian blur is definitely the wrong kernel to do it. There could be definite improvements before jumping to deep learning.
- Dirlewanger 6y agoDidn't Photoshop release a feature in the past couple years that does exactly this? Simulated depth of field? And I remember watching the demo video and it looked damn good. Plus there's that Lytro camera that also allows you to move the point of focus around in the picture in post-processing.
- ygra 6y agoPhotoshop has had a lens blur filter for ages (I think at least back to v6), the trouble usually is to get a useful depth map so it can work properly.
- ygra 6y agoIt's surprisingly common among people who try to fake the blurred background. It does look very wrong, though.