The following is from a discussion about 3ds and obj on the 3dxtract forum if it helps. A SUMMARY??? (Trying to sort the wheat from the chaff) Both file types are subject to revision though 3ds somewhat less than obj. Both file types have individual features, benefits AND limits! Some Apps better intergrate with one rather than the other. Your App may not have the latest version. Every App may modify its interaction depth to that file type both through import or export mode. So many variables are involved that it is impossible to "blame" either importing or exporting Apps for unsatisfactory end results. Finally, it is important to read Your Apps manual or help files on importing and exporting those individual files. As an example, Carrara4 manual p129, OBJ Export (3ds similar) you "save as" for whole scene and "export" for current sellection and ----Check "Convert proceedural shaders to textures".

bwtr