On Kit kat the S-Pen feature for screen capture is screen write, it's one of the functions that are available on the circular popular menu when depressing the pen button (or pulling out the pen if the tablet is set up to display it that way). I'm not sure if they retained the screen write feature in lollipop (I haven't decided yet if I'll upgrade my note pro) but it should be there since I see it on my Note 4 . The thing about screen write though is because it's intent is to allow annotations it applies a small amount of gaussian blur to the capture so that annotations stand out over the captured image.