Hi, because ECW only exists in 24 bit (ErMapper is supposed to be working on a 8 bit version), it is logical that you get the same color troubles as using 24 bit tiff. Why did you switch from tiff to ECW anyway? Best regards, Bart On Tue, 19 Aug 2003 10:29:00 -0500, Steve Lime <steve.lime at dnr.state.mn.us> wrote: --