Originally posted by BigMackCam G, GR, WG and Theta aren't brands though... are they? They're product lines within the Ricoh brand, right? So we have Ricoh for fixed lens products, and Pentax for ILC. Vecnos, as you rightly describe it, is a separate venture...
This depends partly on how the company is organized internally.
At one time, General Motors had separate divisions which handled marketing of their Chevrolet, Pontiac, Oldsmobile, Cadillac, Saturn, and GMC brands, but manufacture of the vehicles was intermixed; for example, we purchased our 1993 Saturn because a man at our local stamping plant had so much trouble satisfying the Saturn assembly plant down in Tennessee. For many years, there was no real difference - other than chrome - between many of the models other than Saturn, and one plant would assemble automobiles for several divisions. By the time we purchased our 2005 Saturn Ion, even Saturn had been merged into this system, and our car differs little from a Chevrolet Impala.