Ok I took some pics of a $20 bill from actually a distance for a lens test where the $20 bill only cover like 1/10th of the frame and when I open it in Photoshop it says --
"This application does not support the printing of banknote images - You can open and edit this image but you will not be able to print it as is. ........"
How does it know a $20 random in a picture not even flat??