Hello! Optimum focusing is quite difficult with this lens. You really need to open the lens to T3.1 or F2.8 to get focus. Then you can stop and adjust the camera settings for the shot you want. This is a fairly awkward way of guaranteeing focus but is necessary as the depth of field is so great at full stop it can be a quick guess in good light but note the distance markings on the lens are completely wrong, I have lens labels for marking printed the correct focus distance. It's much nicer to get the non-clicking cine version, I like the cine focus and iris ring tines, a nice positive feel,,, non-cinematic version I found when I found the F&I links were very difficult to ring in low light conditions. He's physically well built and feels good, he really is. They have a weird fixed hood lid that doesn't allow you to attach a filter. Edge defects, while not amazing, are pretty good, especially for a lens in this price range. got a good one, apparently I wasn't the only one who failed on the first try. Bye Craig