I used the first version of IR820 in 120 about 5 years ago, I bought 8 rolls, shot 6 and the other 2 are still in a loose film box in my fridge. I had terrible issues with little flecks of the emulsion coming off no matter how I souped it, was terrible.
Now I also use 4x5 so I shoot Rollei IR400 in both 120 and 4x5 and *love* the stark contrast and sharpness, love it!!
But I have just got a commission to shoot a re-make of a historical photo that was made on 4x5 HIE in the early 70's. So I am considering either using one of my rolls of 120mm Aerographic HIE or Efke IR820 in 4x5.
I now soup all my 120mm and 4x5 in a Jobo CPP2 so that is what I will be using for the IR as well, in developer mixed with distilled water...
Any opinions on this film as of late?