not to keep pounding the same note, but. . . . . . in portraiture, The "average" or "most people" like to use a longer lens, to isolate subject by using a large aperture, and "fill" most of the frame! this camera does not do this well!!!!! particularly using f/3.5, or 4 (vinetting occurs) HOWEVER, if you compose with a subject in a scene, then it seems to work better. Like I said, this camera is no system camera.
What I use this camera for is to : use it for test runs, test shoots out in the field, before I shoot 4x5. With the gw69III, I can get 8 shoots of the scene, shoot within minutes. I expose/dev. and review images printed. to see if, there is something "there" to move forward with. I.e. 4x5.( is the time of day right, season right, exposure, etc, , ,) with one roll(8 shots) I can vacillate. try a few compositions out,, before 4x5. I think there is a great dialogue to be had with this method. Many things I shot do not move. day in/day out, week in/ week out. season in/season out.