Konica Aerial Type G camera

I have a Konica Aerial Type G camera. It is a 6*6 cm rollfilm camera

presumably intended for handheld oblique aerial photography. The

lens is fixed at infinity focus. I have tried this camera with 120

film, but when unloaded the film was loosely wound and thus fogged

around the edges of the frames. There was also overlap of the

frames. The frame counter reads to more than 12 exposures so I

wonder if it is intended for a longer length of film than 120.

 

What I am looking for is any information at all on this camera; i.e.

how old is it and what type of film was it intended for (220?).

Most medium format aerial cameras use 70mm film -- generally in 5 meter rolls

Thanks for your responces. Unfortunately the camera came with a standard 120 take up spool which may or may not be correct, but it seems to fit okay. This suggests to me that the correct film width is indeed ~60mm.

Is this camera really designed for 120 film, not for 220 film?

There may be more than one "type" of the type g. That said, I used to have one of these cameras. I never tried to shoot 120, as reloading in the air is a pain, so we just shot 220. One thing -one important thing- to remember is that the camera does not callibrate for film advance. What this means is that the spacing between frames, if the camera is working properly, increases as you work your way through the roll, since the shot film is building up on the take-up spool. The space between the last two frames is triple or even quadruple that between the first two frames; because of this, you do not get 24 frames. If I remember right, you only get 22, or maybe even 20. If frames overlap there is either a slip in the spring-advance, or 120 doesnt work, or there is some other problem. It is a well-designed camera, with a great lens, but it doesnt really provide any advantage over other modern cameras. I eventually moved to a Pentax 67, and found it a better unit to use, with a LOT more control due to the lens line, etc.