I would wager though that it is possible to encode the alpha channel in a JP2 image differently from the color channel, so you should be able to, with the right JP2 compressor, reduce the color depth of the alpha channel to 8 color or something and encode that losslessly, or much less lossy, while encoding the color channel as lossily as you want.
I guess it is not possible to do this with fnords' though. Has anyone else found an app they can do this sort of thing with?
I guess it is not possible to do this with fnords' though. Has anyone else found an app they can do this sort of thing with?