Hi,
The weather is not cooperating here so I haven't been outdoors to take any photos with it as yet. Hopefully, the rain will stop soon!
First Impressions from an amateur:
The lens is well built in my opinion. The lens barrel can be wobbled slightly bu hand when it's fully extended, which I think is to be expected.
I like the ability to switch from auto to manual focus using the switch on the lens body.
At long focal lengths, it takes a second or more to focus when you switch from a nearby subject to one that's far away.
The IS in my E-510 will be coming in handy with this lens. I'm just not as steady as I used to be.
More to come...