180 mm 2.8 is best used cheapest lens alternative of 70-200 f2.8 lenses. Very fast Af on d610 extramly fast on D4s Perfect image quality af same or better as 70-200 lenses Under 300 usd u can buy used Super light and short , half size of 70-200. Super sharp same or better than any 70-200. 2.8 perfect colors I love colors. Lens 2x fast on D4s any slow lens on D4s body get fast , this very fast af lens getting extreamly fast on d4s . This is not a zoom lens if u need zoom buy zoom lens. if you have any short lens like 50mm 85mm 24mm etc and u dont want to sell , if you like to use prime lenses . No need to buy 70-200 buy this lens 10 times cheaper. no one can undersand which one 70-200 fL or 180mm 2.8 . if u have a lens but cannot focus fast . set your camera image quality jpeg normal . do no use 2 sd card same time like back up , don't use bigger image size like 36mb . your camera and lens will work fast. D4s body only 16.2 mp but gives perfect result and so fast. This is for sport action and birding photography. for landscape sure speed not important. you can put 2 lenses in your small bag also what only u need any ultra wide lens 16-28 f2.8 tokina or 16-35 f4 nikon + 180mm f2.8 or ultra light set light set 20mm 2.8d + 180mm 2.8 I also have 300mm f4d lens this 2 lenses dream lenses. compact and perfect image quality . 500 usd 300mm f4d and 180mm 2.8 if you love prime lenses for sport with ultra wide lens u can shot any pro sport .

No. I love this lens 200 mm f2 or 180mm f2.8 . I buy this one also buy 300mm f4d done if you need long lens. I never need 200 f2 .I wanted to buy but , I tested so heavy so big u can only use with monopod. 180mm 2.8 perfect image quality + smaller and lighter than any 24-70 2.8 lens u cant believe how compact and light this lens.