D800 @ x 1 (with extension tube PN-11)

Resolution: This lens achieves only a fair centre resolution at f/5.6 using an extension tube to achieve x1 magnification

Chromatic Aberration: High as the lens is stopped down

Vignetting: Very low across aperture range

Macro Sweet Spot: there better choices: use the lens at x 0.5 without an extension tube