Rich, So far as I know, the F3 waist-level finder only comes in one model. The original F had 3-sided and 4-sided finders, but they will not fit the F3. For the F3, your choice is between the normal waist-level finder (DW3), and the "chimney" finder (DW4). The DW3 is a true waist-level finder; you can use it with or without the flip-up magnifier, and actually use it without having your eye right on top of it. The DW4 is more specialized; it gives you higher magnification and a better-corrected magnified image, but it takes some adjustment for your own eye and is really best suited for slow, careful, on-tripod sorts of work. The F3 will meter normally with *any* finder. That's one of the reasons I love it for macro work. Richard Mendales University of Miami
