Mamiya 7 with one lens attached (usually the 80); 50 and 150 lenses; assorted ND and B&W filters; cable release (not sure why since this camera is always hand held); assorted rolls of film (400TMY2 or a Portra); lens cleaning cloth.

All this goes into a Domke F6 or a Bare Bones 2
shoulder bag with room to spare.