Nikon 28mm f/1.4E Aperture Series: Mosaic
See my Nikon wishlist and get Nikon 28mm f/1.4E at B&H Photo.
This scene tests the Nikon 28mm f/1.4E on the most demanding target I know of: a finely detail geometrically planar subject at distance. Such a scene is absolutely unforgiving of focus shift or field curvature or any lens symmetry defects; it is the acid test for gold, or silver or lead—optically speaking.
Nikon 28mm f/1.4E ED Aperture Series: Mosaic
Includes images up to full camera resolution from f/1.4 through f/8.