The Canon RF 135mm f/1.8L IS USM has a lot to live up to. Canon last released a 135mm pro lens all the way back in 1996 – and the Canon EF 135mm f/2L was one of the absolute best lenses for portraits, hence why it hadn't been replaced in for 27 years.
But now the time has finally come – and the wait has most certainly been worth it, because the Canon RF 135mm f/1.8L IS USM is absolutely an artist's tool. And for me, the question is: does it trump the Canon RF 85mm f/1.2L USM, my personal favorite, as the best portrait prime on the system?