My TIFFs look funny.
There can be several reasons for this. The most common error is that JPG compression was used instead of ZIP compression when saving the TIFF. This kind of compression is not 100% compatible with many image processing programs and also with picdrop. We therefore recommend saving with ZIP compression. This method also has the advantage that, unlike JPG compression, it does not reduce the quality of your image data, but still effectively reduces the file size.