I use it as a walker. I dragged it around abroad, actively exploited it, while the condition is very good. For indoors, it is dark, with a flash it is excellent. Very comfortable wide range of focal lengths. This is my 5 Sigma lens, all very high quality. Now he works with a carcass - 70d canon. There was a Sigma AF 18-250mm upgrade, I like this one better. Very convenient for travel. I plan to buy Sigma DG 30mm F / 1.4 .
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