It's on sale because there's a newer model to be released in a couple of weeks. I'm holding out to look at the new one and to see if the used market gets a few more of the current gen once the new one hits the street.and your sigma is on sale right now for 2700,, which for a zoom 2.8 is really an awesome deal. so,, maybe the perfect time.
I've been lucky enough to obtain the AF-S NIKKOR 300mm f/2.8G ED VR II, this is one sweet lens, I love the color and clarity.
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