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If the internet isn't down, you could cross-check that nonsensical "20 lbs" specification with the manufacturer's specification on their website. If you have a modern browser, select the name of the lens, right click and choose the option to search for what you've selected. In short order you should find a Tamron site where 20.3oz is specified. You could have found the answer yourself in less time than it took you to post your question.
Sorry, there was a problem. Please try again later.Yes, Best Buy lists its weight as 20.3 lbs. That would be quite a heavy lens. You could just look up the lens weight at the manufacturer's website for a more authoritative specification to find it's 20.3 ounces. You could then click on Best Buy's link to report their error.
Sorry, there was a problem. Please try again later.It weighs 20.3 ounces or 575 grams.
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