Oh my... thank you all... this is just the info I was hoping for, and becoming quite excited.
Of note: Have three formats.. 35mm Nikon, RB67 medium format, and 3x4 Speed... all classic manual cameras, and going to use all three. ;-) Why not! Got two tripods, and will have to dig out the thing a jig, were ever it may be, that you can attach to something and holds the camera. Just loaded one of the backs of the RB with Provia 100f yesterday.. (the other back has the TRiX), so will give that a go. Got Velvia 50 in one of Nikon backs, and Protra in the udder. Can shoot 25 or 100, rather than the 400 in the Speed. And,,, were camping at a very, desert, picturesque place, that is to the east of Phoenix Az. So should have clear skies to east and north, with the glow of Phoenix acting like a 'new moon' ... or more, to the west where that source usually first rises, but alas will be missing in action as we are camping out for three nights starting this coming Thursday.
WOW!!! Its gonna be a new photographic experience.