NIKKOR UD 20MM F 3.5.
My choice for MVP this month is the Nikkor UD 20mm. This vintage wide angle prime is full of character and dimension. Introduced in 1967, it was the widest non-fisheye lens ever made by Nikon. For handheld, this lens is stable but still alive. The focus throw is just right for both pulling from the barrel and follow focus. The contrast is medium, but loses a lot with a direct hit from a source due to crazy lens flares, veiling flares, and ghosting. The Field Curvature (focus falloff) is pleasant, the edges of frame are usable with a touch of distortion. Coma is there, Chromatic Abberation is there. Vignetting is mild, which is big for me. Overall, this is a really fun lens, and this lens and the CY Zeiss 25/35mm live on my Fuji xt3 pretty much all the time.