I'm currently using and AFII - P45+ combo. Are there any zoom lenses from Mamiya worth buying? (City landscapes...) Sometimes it would come in handy... How is the 35mm? Is the 120 macro hard to focus?
I own the MAMIYA 28mm, 35mm, 45mm, 55-110mm zoom, 105-210mm zoom, 75-150mm zoom, 120mm macro, and 300mm lenses, all 645AFD-II versions. With the AFD-II and P45+ I observe that the 28mm, 120mm macro, and 75-150mm lenses are much sharper than the other (older, film) lenses.
Regarding the 35mm lens, I find it not as sharp as the 28mm lens. If price is an issue (the 28mm is like $5,500), then you might also look at the 45mm f2.8 AF lens...
Regarding the 120mm macro lens, I like it, especially for flowers, but you may find it redundant with the 75-150mm lens. Yes, I find it easy to focus. Also, I read on the internet that MAMIYA will be introducing a new 120mm macro lens soon featuring a 16bit CPU and AF (versus 4bit CPU and MF on the current lens). So you might wait on the macro lens.
So to answer your question, yes the 75-150mm zoom lens from MAMIYA is definitely worth buying.