One of my favorite ultra wide lenses is the Laowa 7.5mm f/2 MFT ...
Yes, mFT, which is one of the first mirrorless systems and was my deep dive into photography a decade ago.
This shot here inside The Vessel probably could have been achieved with other lenses as well but...
in my case I could use this tiny lens without pulling much attention on my shooting and
look at the nice apperture stars created through the sun and the reflection of the sun on the rim to the right - I love it :)
Psst, right now if you are interested this wonderful lens is on sale directly from LAOWA - https://www.venuslens.net/product/laowa-7-5mm-f2/?campaign=7.5er