To add to the point above: i've tried a lot of different setups in tight spaces over the years and that 4k60 crop really is a killer. if you want to play it safe, the Viltrox AF 13mm f/1.4 STM is basically the perfect middle ground. it's sharp as a tack and keeps you from looking like a giant thumb on camera while still giving you that nice bokeh. another reliable choice is the Sigma 16mm f/1.4 DC DN Contemporary. it's been a staple in my bag forever because it's built like a tank. only issue is it's a bit of a heavy boy and might feel a bit tight if your desk is literally touching the wall. both these will fit your 400 dollar budget easily... just gotta decide if you want the extra width of the 13mm or the legendary sharpness of the sigma. i'd personally lean toward the 13mm just to be safe with that crop factor tho.

> Is the 11mm too wide or should I stick to 15mm? Unfortunately, that 4K60 crop on the Mark II is a total pain. I had issues with the Sony E 15mm f/1.4 G because it ends up way too tight for a desk setup. Honestly, the Sony E 11mm f/1.8 is your only real bet. Its not as sharp as I expected in the corners, but the Sigma 16mm f/1.4 DC DN Contemporary is just too bulky for vlogging. Go 11mm.