Klebnor, if you have some care when exporting sometimes it you be all right, or you will need to twick the bump and some transparency channels. Look the attached image, the top image is a test render from the fish imported into Carrara as a OBJ file. The bottom show the export dialog fro Daz Studio where in the first tab you can choose the Carrara preset (for scale) and you see now the second tab where you choose to export image maps to... so dont forget to choose this options so you dont have more problems.

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