Diffuser; Using The Diffuser - Sony Alpha HVL-MT24AM Operating Instructions Manual

Diffuser

Strong shadows can be softened by attaching the diffuser to the flashtube. Always
use the diffuser with an arm to prevent it appearing in the image.
Example:
With diffuser

Using the diffuser

1
Unclip the panel from the diffuser.

Without diffuser
This side cannot be
detached.