really nice thread and really nice pictures!
The TSE24 is extremely versatile a lens. It requires time and frequently it is better to use a tripod and live view. You need time to think about lines, exposure, amount of compensation for shifting-related softness in the corners (i.e. need to stop down), and what you can do to prevent camera blur. 24mm is not enough when it comes to real high-rise buildings. But to me, the TSE24 pulls it off to make these pictures look nicer. And it is nearly distortion-free, a big asset in architectural photography. And yes, it's a pleasure using it on a 5 DII.
Mainz Cathedral ISO 640, f5, 3.2s, window sill
Potsdamer Platz ISO 200, f/16, 1/250s
Deutsche Bank ISO 200, f/10, 1/250s, hand-held
Lumen at the blue hours ISO 1600, f/10, 0,5 s, bean bag