Flash-sync Speed Failed

I tried to change the shutter speed from 1/60 to 1/125 and the result was some part of the frame is black. The flash-sync speed should be at 1/60 but I ignored it.

Photographer:
freezedudul
Uploaded:
2012-05-02
Tags:
black girl orange pretty studio superia
Camera:
Fujica MPF105
Film:
Fuji Superia 100
City:
jakarta
Albums:
Orange: New Magenta