The Sigma 85mm 1.4 art is SO tempting, but I am trying to decide if it's worth getting if I already have a 70-200 2.8. I love how shallow the depth of field is on 85mm prime lenses around 1.6 is, but i'm not sure if the difference will be worth it. What do you guys think? Is the 85mm 1.4 a good addition to having a 70-200 2.8, or does it kind of become a little redundant?
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