Blender Maya Converter (Bmc) by Nava Lab moves scenes between Maya and Blender for artists who work across both applications. It transfers mesh, light, camera and material data, and automatically converts shading and lighting to the target software's system. When a model is finished in Maya with V-Ray, the scene can be sent to Blender to render in Eevee or Cycles; conversely, a scene shaded and lit in Blender can be sent to Maya and converted to the V-Ray render system.
Transfers are controlled through SEND and GET options for mesh, light, camera and material. Additional switches let you send only selected objects, include invisible objects, multiply light intensity on import, keep existing transformations, set IES files for gray IES lights in Maya, and set scene scale in Blender. A Save Setting feature stores folder paths and user settings for communicating between artists on different software.
Supported material node conversions include BSDF_PRINCIPLED / VRayMtl, TEX_IMAGE / file, TEX_NOISE / noise, INVERT / reverse, MIX_SHADER / VRayBlendMtl, and NORMAL_MAP and BUMP via VRayMtl. Documentation is available.