I have code that uses the media plugin and it's basically like this.
local media = Media.new(e.path)
media:crop(100,100, 200, 200)
local localTakenImage = Bitmap.new(Texture.new(e.path, true))
This is not cropped at all, it's the full sized image. The e.path is what's in the path after I call Media:takeScreenshot()
The app is in landscape if that helps.