I was able to find most of Superman's appearences on Smallville, all of which are CGI. Can't blame them for doing that, considering how much action was put into each scene.
Superman's cape in Hereafter.
Superman flying to save the plane.
Superman flying toward the plane.
Superman saves the plane.
House of El symbol after Clark's dream.
Superman's cape in Homecoming.
Clark puts on the suit in Finale.
Superman's cape in Finale
Superman leaving the fortress.
Superman saving Air-Force One
Superman approaching Lois.
Superman infront of Apokolips
Superman looking toward Apokolips
Superman flies toward Apokolips
Superman over Metropolis. Oliver watches on.
Superman pushes Apokolips away.
Superman watches Apokolips.
Superman watching Apokolips
Clark changing into Superman