The difference between the two variants of the Sony FE 90mm f/2.8 Macro G OSS lens lies mainly in the region for which they are intended. The EU variant is specifically designed for the European market, while the other version may be intended for other regions. There are no technical differences in the lens specifications themselves, such as focal length, aperture or macro capabilities. The main difference could be in the packaging, instructions or warranty conditions, which may vary from region to region.