Working with the latest version of the Pentax 6x7 Takumar 105mm ƒ2.4 together with the Vertex Method - showing the lens' full glory. It was Pentax' (6x7 system) boutique lens, I believe. Slightly brighter than most medium format lenses, and with a special focus on giving a smooth bokeh.

Which I think shows of well - even at aperture ƒ4 which I had used in the photo of the Monstera plant above.