Open this test image if you don't believe me: https://dl.dropboxusercontent.com/u/824493/layertest.tif
https://sites.google.com/site/elsamuko/new.tif
tiffinfo of this image:
http://pastebin.com/raw.php?i=85aUFjeS
Open this test image if you don't believe me: https://dl.dropboxusercontent.com/u/824493/layertest.tif