I've been having fun with an old Nikon 35mm f/2.8 PC coupled with a Lensturbo II. Not quite wide enough, so I have a Samyang 24mm on its way. Can't wait to try that out. Even if I have to use it without the Lensturbo (the combination may be a bit unwieldy), the FOV will be a little wider than the Nikon and LT2 combo.