This adapter allows the MT-24EX Macro and MR-14EX II Macro flashes to be mounted to lenses with a 67mm filter ring.

The following lenses require the use of this adapter:

• Canon 100mm f/2.8L IS Macro
• Zeiss Milvus ZE 50mm f/2M for Canon
• Zeiss Milvus ZE 100mm f/2M for Canon
• Zeiss ZE 50mm f/2 Makro Planar for Canon
• Zeiss ZE 100mm f/2 Makro Planar for Canon