You might get better answers if you added to a thread about the Goodman cameras or started a new one, vs tacking this question onto threads that are not about Goodman.
I'll remark that although RB67, Graphic 2x3, and Horseman backs all use the Graflok-type sliders to hold the back on, they're not all guaranteed to be the same dimensions in the interface to the body. I think the RB67 and Graphic 2x3 backs are very similar, but the Horseman ones are a little longer on the hinge side and may not fit all cameras designed for RB67-type. (And there is an older type of Horseman back that is much longer and wouldn't fit at all.)
I think the RB67 and Graphic 2x3 backs are very similar, but the Horseman ones are a little longer on the hinge side and may not fit all cameras designed for RB67-type.
I can confirm that RB67 roll film holders work on the Graflok mount of a Century Graphic, and Graflex 2x3 mount roll film holders (at least 22, 23, RH10/RH20, and presumably RH12 and RH8) work with the RB67 (aside from disabling dark slide and double exposure interlocks). I have both cameras and an assortment of Mamiya and Graflex backs, and use all the backs on both cameras.
I can confirm that RB67 roll film holders work on the Graflok mount of a Century Graphic, and Graflex 2x3 mount roll film holders (at least 22, 23, RH10/RH20, and presumably RH12 and RH8) work with the RB67 (aside from disabling dark slide and double exposure interlocks). I have both cameras and an assortment of Mamiya and Graflex backs, and use all the backs on both cameras.
I use both ground glass and Graflex R backs on both a 2x3 Speed Graphic (that has the Graflok upgrade installed) and a Mamiya Universa with the G adapter.
But, I am not enthusiastic about the R backs. The RB67 backs look to be better built and more precisely machined and I always wondered about using them on my Graflok-backed cameras.
Much of this likely has to do with the RB67 backs being designed around 1970, while the last update to the Graflex backs (RH series with lever advance replacing the 22/23 with knob) was several years earlier. Also, the Graflex backs likely saw more use, since there was a large "installed base" of Graflex-type cameras to use them before the RB67 appeared, and the Graflex cameras and backs were significantly less costly when both were new -- so got more use.
Has anyone tried to change the lens on the Lomography Sprocket Rocket, to make a lightweight yet good quality pano camera? I guess a 65mm lens for the 6x7/6x9 press cameras will work well: Mamiya Press 65mm, Horseman Topcor 65mm, etc.
I have tried 135 pano kit for Pentax 67 with 45mm lens, which works well. But the combo was a bit heavy and big. Fujica 690 will be quite big and heavy too.
Has anyone tried to change the lens on the Lomography Sprocket Rocket, to make a lightweight yet good quality pano camera? I guess a 65mm lens for the 6x7/6x9 press cameras will work well: Mamiya Press 65mm, Horseman Topcor 65mm, etc.
I have tried 135 pano kit for Pentax 67 with 45mm lens, which works well. But the combo was a bit heavy and big. Fujica 690 will be quite big and heavy too.