I have recently gone through some re-organization of my film archive and noticed that one of my first few rolls of film, in fact number 2, was Tmax 400. I shot it in my Ricoh GR1v and had it developed at a local lab. I was new to film and new to the GR1v, which is now broken beyond repair. The GR1v reads the Dx code on the film canister and sets the ISO speed automatically. I thought I had no choice but shoot it at that speed. I now understand that you can just set the exposure compensation to -2 stops for example.