Please be sure to look carefully in the hair on the dark side of the woman's head as the problem appears here too. I shot her using a Rokinon 85mm f1.4 so these's no lens data, but this clearly points to an issue with the body itself, not either of the lenses. All firmaware is current, all memory cards are formatted in-camera prior to use, batteries fully charged and changed before becoming fully depleted.
SLT-A99V/SAL2470Z. Photos were converted to jpg by Aperture prior to uploading to SmugMug and are exactly the same as the original 23.62-23.69mb RAW files, shot in Adobe1998 color space.