Canon AD-M1-RA Macro Lite AdapterThe AD M1 RA is a specialized Macro Lite adapter designed for use with the AD M1 MA Macro Flash Head Adapter. Built to expand the versatility of your Macro Twin Lite setup, this adapter allows photographers to seamlessly pair their lighting system with the RF35mm F1. 8 L Macro IS STM lens for enhanced close up photography performance. Expanded Compatibility With the AD M1 RA adapter, users can easily extend the compatibility of their Macro Twin Lite