<p>I just bought a Sigma 150-600mm C. I think and also according to reviews, that this is where you get most out of your money. It costs below 1000$</p>
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<p>The Sigma 150-600 Contemporary is a very good lens, with an outstanding performance to dollar ratio, and the build quality feels excellent. It's a great bargain, given both its versatility and the prices for the alternatives from the major manufacturers. While image quality isn't super tack sharp, especially at 500-600mm (and the corners aren't as crisp on full-frame cameras), if you factor in all the cash left in your bank account as opposed to purchasing a 500mm or 600mm prime lens or something like the Canon 200-400mm f/4 lens, you'll be thoroughly impressed and chuckling all the way to the bank.<br /><br />http://www.imaging-resource.com/news/2015/03/30/sigma-150-600mm-contemporary-lens-review</p>
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