Once you have installed GIMP and any necessary plugins, the next step is to load the images you want to process in bulk. You ...

I don't think you can. I'm assuming you mean 16-bit per color, or 48-bpp, right? I'm pretty sure that the Gimp's internal color precision is only 24-bit, so it's probably dithering down to that when ...

GIMP is a great image editor that is free and open source. If you want something that is powerful with a ton of features and plugins, then this is it. Unfortunately, it is not the easiest image editor ...