My main concern with this 2x crop if distortion on wider lenses. Is the smaller image window a help given a 24mm (35mm eq) would need an 11mm (35mm eq) which is in the fisheye territory?
If it's a fisheye lens then it'll say it's a fisheye lens, right? I mean, when the Hollywood big wigs use an Arri Master Prime T1.3/12 mm, they're not having to deal with lens distortion, right? At least not like on a fisheye?
More in my price range - the Tokina 11-16mm wouldn't have much lens distortion, would it?