Zeiss Otus 55mm f/1.4 APO-Distagon: Night Shooting
A common disappointment with f/1.4 lenses is the presence of coma-like effects or sagittal coma flare, the manifestation of which is a smeared “point spread function” away from optical center. It is often accompanied by color halos (particularly violet haloes) all of which degrade image contrast.
Two pages in my review of the 55mm f/1.4 APO-Distagon speak specifically to the low light shooting capabilities of the Zeiss Otus 55mm f/1.4 APO-Distagon: