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Testing Sigma 30 f2.8 on A7: you got a dirty cheap 35mm f2.8 FF autofocus lens!: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
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The $199 Sigma 30 f/2.8 Real World Lens Review on the Sony NEX-7! Bang for the Buck of the year! | Steve Huff Hi-Fi and Photo
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