https://sirrandalot.gumroad.com/l/VirtualBlenderCamera

Have you ever wanted to take photographs inside blender? Well now you can! (sort of)  New and improved, this virtual camera uses an actual collection of lenses, some layered filters and a tiny bit of compositing to simulate taking a photograph on an old film camera. Because the lens and aperture is simulated in a physically accurate way, the resulting distortion and bokeh effects look unlike anything you would normally get just using built in compositing techniques.