Trade-offs, trade-offs. If you want an inexpensive 6x6 system camera, the Mamiya TLR will work. The weight issue is a bit misleading - the TLR bodies are heavier, but the lenses lighter than comparable SLR items.

Try for the US Mamiya Forum. The Mamiya US site ( ) needs Internet Explorer to navigate, so it can be hard to find the forum!

I have some weight comparisons, plus some other useful information at