I have received TIFF file in CMYK color space with alpha channel and ICC profile included, but APhoto open as RGB with no alpha channel.
Of course if you open them using Photoshop CS6 the file are open correctly.
This is a very big problem in a professional work flow!
See attached fileTIFF PROBLEMS.zipTIFF PROBLEMS.zip
PLS do not share this file!
TIF_Problem.zip