I stumbled across an rather large image of Optimus Prime (movie version). Check out the 10 MB jpg here. The image is 4432 x 6922 pixels. It is 14.773 x 23.073″ at 300 dpi. (That basically means you can print that image in a book or magazine at that size.) The image shown above in this post is a cropping at 100% of Prime’s forefinger and some of his thumb and middle finger.