This is the Interfit STR103 Strobies Globe Diffuser. When coupled with an optional Flex Mount for your on-camera flash, it provides a soft, uniform light source for shooting large groups of people.
Versatile
Using the globe behind your subject with a color gel on the back of the globe will result in a hair light and a color wash for your background
No Flash Adjustment Needed
When using iTTL or eTTL mode on your flash