Weil gleicher Sensor poste ich es hier auch noch mal...
Viel Lesestoff zu diesem Thema gibt es
hier.
An dieser Stelle gibt es auch eine Stellungname von Sony:
Basically what you see on those pictures is an exhibit of streaking effect commonly seen on CMOS sensors. The sensitivity to this phenomenon is more or less visible depending on the sensor construction. Each generation of sensor tries to reduce such phenomenon but it is not always possible to do so. The 24Mpix sensor used on this model (and on some other Alpha) is a bit more sensitive to this issue compared to previous models.
This phenomenon is reproducible on all ILCE-6000 using similar condition (bright backlight shot and dark subject in foreground, applying contrast boost in the shadows) but it is mostly noticeable when some post-processing are applied (like for example brightness/contrast change).
In normal shooting condition this should not be a major issue.