Quote Originally Posted by SMBooth View Post
I would imagine that the negatives from a 6x12 camera would be 6cm x 12cm...
Whilst it is perfectly feasible to imaging that, the reality will be closer to 56mm x 110mm.

No 120 film format has images quite the size which the format is known as. e.g. 6x4.5 is usually 56mm x 42mm, 6x6 is usually 56mm x 56mm.