Hi,
I've owned many mamiya TLRs and most of the lenses, so i'll give my two cents here:
- The 135mm and 105mm lenses are very beautiful in rendering but they require to protrude very far away from the body, making handling or ergonomics a bit uncomfortable, particularly the 135mm. The C33x models, having an extra shutter button, are better for such lenses.
- The 180mm "non super" isn't an really inferior lens to the praised "super" lens. But the early version of the 180mm often suffers from haze at the last element. Watch out. All these 180mm are very sharp and have delicious rendering of out of focus images (as well as the 135 and 105 of course)
- Yes there are many versions of the 105mm lens.
- Avoid lenses with distorted mounting plates!
- Forget about the blue dot! Who cares about the blue dot! All mamiya shutters are just fine except the really really really early seikosha shutter with speeds to 1/400
- The porrofinder and the CdS porrofinder are crap, avoid. You can't really focus with them, the image is small and dim.
- EVERY mamiya C330 out there will need the foam below the focusing screen frame replaced, otherwise it won't necessarily achieve proper focus calibration. It's a simple job.