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Erica_Marshall: "Stripes" -Bad Crop by Flickr
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Erica_Marshall: Canon 70-200mm Vs Sigma 50-500mm at 400mm
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Erica_Marshall: Canon 70-200mm Vs Sigma 50-500mm at 280mm
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Erica_Marshall: Canon70-200mm Vs Sigma 50-500mm at 200mm