Sigma 150-600mm Preorder?

I have a Sigma 150-500mm for a few years. It was one of the early models. I was never particularily happy with it's sharpness. It was later recalled (the early made ones - mine was amongst them). I didn't bother in the end because I'd been a bit disappointed with it and didn't feel like going to the hassle of shipping it off.
I think you are taking a risk taking an early model of a new lens. They probably don't have all the issues ironed out on it. But maybe things have improved significantly with Sigma. Hopefully you get a great lens and that it's far superior to the 150-500mm
 
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canon1dxman said:
I wonder if we will see price reductions on the Tamron once stocks of the Sigma become freely available (assuming they do)?
Isn't that doubtful since the Sigma is twice+ the price of the Tamron? I have been waiting on a Tamron for several months now.
 
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