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Review title: Sigma's great buy for the price
Product review: I was in need of a more powerful lense to compliment my 28-90mm lense when I found this. Though it was realitively inexspensive it surprised me in it's clarity /sharpness. Yes there is a bit of a halo at 300mm but not that bad. The auto focus isn't that great but is just ok. I use manual focus most the time anyway. All in all it is very good for most work and you can't beat the price. It is heavy enough to require a monopod for steadiness to aquire the sharpest shot. Good purchase if on a limited budget like myself.
