GeorgeR

That's a good point, I suppose they're not of much use in Paint.NET.

In images that are converted from 8bit to 16bit in photoshop, the alphas are 16bit, but stored with RLE encoding. Is it possible to add RLE (read) support for 16bit channels? edit: Indeed it seems that even images created as 16bit encode ImageData with RLE compression. It doesn't make a lot of sense for 16bit but hey that's what they did! Photoshop CS6 by the way. Attached is a sample. _STP00000_Splitty16.zip