These tilt-shift lenses are certainly coming back in vogue. Great quality and image blur with a maximum aperture of f/2.8. Please know that all tilt-shift lenses are manual focus and they have quite a bit of a learning curve.
Focal Length & Maximum Aperture
10 elements in 9 groups
Diagonal Angle of View
51° (without tilt or shift) Image circle dia. 58.6mm.