The county I work for has aerial photography in 3", 6" and 12" resolutions, depending on what the various municipalities wanted to pay for. We want to convert the 3" and 6" data to 12" (maybe copy is a better word! not looking to get rid of higher resolution data.). There are technical and political reasons behind this. Anyway, I've done this before, but it was a while ago and don't remember how I did it. Any ideas? Thanks.