Sublime images from a sublime lens; I am fortunate to own one - purchased pre-owned - & worth every penny; nothing stands up to these optics - fast, responsive, versatile, & the weight is surpisingly inconsequential (I know, I've carried this behemoth around on all-day-long shoots. I couldn't not have this in my lens catalogue - & I'm ordinarily more of a prime advocate; in more common vernacular, it's the dog's balls !