In my company I have published many Image Service with ArcGis Server 10 (SP4) Image Extension (Mosaic Dataset). After many problem I noticed that, while ArcMap 10 behaves regularly, ArcMap 9.3.x can not read the "default display option". Every service is set to return Jpeg or Lzw image, and Bilinear, while ArcMap 9.3.x configure them as Nearest with "None" compression. This produce heavy, heavy traffic and an abnormal behaviour of Image Server (raster do not always appear in ArcMap). I've solved produce many lyr file which diffuse to users via "Windows share". But I do not know if it's a bug or something if I'm wrong?
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