In Illustrator CS6 (16.2.0, 64 bit) I am exporting an artboard to grayscale TIFF and the resulting file is one point too large, leaving a transparent strip on one edge. Exporting this artboard to PNG works fine. I am not using Align to Pixel grid. Ideas?
After I posted this the forum recommended some other postings to read (which did not come up when I was searching), and I found another interesting aspect of this. My artboard is 504 x 317 points, which resulted in the TIFF being 504 x 318, with the transparent strip on the bottom. When I changed the art board dimensions to be even (504 x 318), the problem went away. So I will live with this by having dimensions divisible by two, but it seems like a bug, since it affects TIFFs and not PNGs.
By the way, a related TIFF export bug in Illustrator is that compression does not work. Photoshop can correctly create an LZW-compressed TIFF, but Illustrator does not.
Thanks, but I already did that before posting my question. As I have been experimenting more, I found that my simple solution in the first reply – using point sizes divisible by two – does not work in all cases. My current workaround is to see what size Illustrator uses to save the TIFF and then use that exact size for my artboard. Fortunately, I have some leeway in this case.