Ryan Cecil Smith’s new serial “SF” gives classic sci-fi comics an impish, homespun twist while still staying true to form. Introducing the space-scientist-fighter crew of the S.F.S.F.S.F. and the hapless orphan earthling Hupa Dupa, Smith balances straight up expository scripting with satisfying bursts of rough-and-tumble action. Humor gets played fast-and-loose here giving the tight storytelling a breezy edge and lending a weird wit to the crisp Tintin-flavored schemes.