My 195XXX copy of the 55 1.2 seems to have extreme sharpness in a large central area at 1.2 and up.
It has the usual veiling flare at 1.2 that can get out of hand with direct sun or point lights at night.
Here is some evidence, a neighbor's low water use garden, this house was recently sold, took advantage of the time it was empty to take photos.
My 195XXX copy of the 55 1.2 seems to have extreme sharpness in a large central area at 1.2 and up.
It has the usual veiling flare at 1.2 that can get out of hand with direct sun or point lights at night.
Here is some evidence, a neighbor's low water use garden, this house was recently sold, took advantage of the time it was empty to take photos.