Recently filmed wedding and for the sake of interest I made several such test shots on the Canon 35 f2 IS, Canon 50 f1.4 and Canon 85 f1.8. Here you can clearly see the difference between the perspective and the nature of the bokeh of these great lenses.
1) Canon EF 35mm f2 IS USM Lens. When shooting small objects, my favorite is bokeh at 35mm. This focal point allows you to capture a large area behind the subject and at the same time f2 gives very nice bokeh. I don't see the point of buying 1.4L for myself.
2) Canon EF 50mm f1.4 USM Lens... As you can see, the bokeh has become more blurry due to the increased focal length and higher aperture. It is difficult to compare by color, because the shooting settings were different, but at f1.4 the fifty dollar loses contrast. Canon 35 f2 IS gives clear, excellent results when open. It's more difficult here on the open.
But if you cover fifty dollars to f2, the bokeh circles acquire edges. But I think this is not at all critical. Let me remind you that the Canon EF 50mm f1.4 USM has 7 aperture blades, unlike the other two lenses in this test, where there are 8 each.
3) Canon EF 50mm f1.4 USM Lens... The 85 is strikingly different in perspective from the previous two lenses. It feels like a telephoto lens with compression of space. The bokeh is blurry, noticeably stronger than on the fifty dollar.
When the lens is covered up to f2.8, the bokeh circles also acquire edges. But this is not as noticeable as on fifty dollars. Although I prefer to shoot with this lens open at f1.8. After all, it is fully operational here, without any loss of contrast or color.
Here you can see in full resolution how sharp these 3 lenses are at f5.6. There is no leader among them - they are all perfectly sharp throughout the field. I love Canon optics. No Sigmas, Tamrons and other evil spirits stand next to this.
Rhetorical question: how can you even look away after that? Tamron 16-300mm?