The AstrHori 18mm F8 probe goes beyond of what you could ever think and is very fun to use. But professional results will require a lot of time investment and some add-on material (motorised rail and additional lights)
TTartisan recently announced the new 27mm f/2.8 APS-C Autofocus E-mount Lens. You can preorder it at Amazon US&CA&EU, Pergear and TTartisan shop pages.
It is very light and compact but succeed to provide an aperture ring with click. Performances are good . There is good (F2.8) to excellent sharpness (as of F4) , good color rendering and nice bokeh but high vignetting & bad resistance to flare. AF is ok but could be further improved.