I have an application that was built with .NET 2.0 and it loads a TIFF format image from file. Under windows 7 the image is corrupted, while under XP that was not the case. The image appears to have its pixel values rounded to the hex pixel intensities of (00,11,22,33,..ee,ff). This effect is also present under windows 7 Paint, however other tiff viewers do not have this limitation. It appears to happen when the 8-bit TIFF has photometric mode set to MinIsBlack, and it doesn't happen when the 8-bit TIFF has a palette.