I recently picked up a used Nikon 300mm f/4 PF lens, as prices have fallen for F mounts ever since Z came along. I already owned the old Nikon 300/4 AF lens as well as a 300/2.8 AF (screw AF), which is hy. In any case, I have really enjoyed having the PF...compact and lightweight, the optics are great, VR works very well, I'm shooting this way more than I ever used the larger/heavier older 300mm lenses. The bokeh isn't quite as smooth as the older lenses, but I guess that's the trade-off of using a fresnel element. I haven't really noticed any major issues shooting into the light (such as night photography). I'm mostly using this for landscapes/cityscapes...this was taken one evening in Matsuyama, Japan: