I keep being asked which Fuji GF lenses hotspot and which don’t. I tested on a GFX 50R modified by LifePixel to respond to wavelengths longer than 720 nm. Here’s a table I made from the results:
OK means no hotspotting, or very little. H means hotspotting that I consider to be unacceptable. I threw the Coastal Optical 60 mm f/4 UV-VIS-IR into the mix. All lenses were tested with subjects tens of meters away. The second row is the f-stop.