The goerz RD Artar is a fabulous lens for large format and ULF. I don't shoot anything larger than 8x10 for which i have two RD Artars, the 19" and the 24 " both in Ilex shutters. If you like sharp and good contrast that is about the best you can get. I don't have the 600 Fuji but i have the 450 and i consider the 19" RD a better lens than the 450 fuji. Only disadvantage is the size of the shutter.