leonzhu said:Just to point out:
We can MOUNT MF lenses. Which means we can SHOOT WITH MF lenses. Metering is not an issue, as there are external meters, and also the human eye. There is no aperture limitation on a manual lens, you set it with the aperture ring.
Some systems, due to the change of standard between MF and AF lenses, cannot mount MF lenses on AF bodies, losing a legacy of MANY optically wonderful lenses.
Two points:
1. The flexibility to use MR lenses is probably important only for those with an existing collection of legacy lenses
2. Canon MF lenses also could be mounted on EOS cameras via adaptors (though it's not cheap). so, there's no losing of a legacy of MANY optically wonderful lenses with Canon.