Ken wrote: > I said hard anodized "surface". Aluminium is inherently a soft metal. Once > you scratch down to the bare metal, be careful, it's soft. > Re K/M barrels, I thought they were of brass those days. I cannot think > they use hardened steel as it would be a bit costly to machine. The metal > barrel does not have to be super strong as it does not bear much structural > stress but should give easier machinability. But I could be wrong.
But it is only the surface cover. The lens barrel on the 77 and 31 Limited are made of steel like most FA* lenses. The latter use painted plastic covers which are not very durable (understatement of the year). Pål
