Well, i am a idiot and put this lens on my credit card which i should not have done, that is allot of money to pay off. I just got the lens today, i bought it from a place with a great return policy, as much as it cost it better end up being totally awesome, if not i can send it back. hopefully it meets my expectations.
ill have a review on it here soon as far as IQ goes. ill say what i think about it as of this far. i did get to shoot with it for a few minutes today, the sun was going down and its very cloudy so the lightning conditions were bad, not many birds out today either. i got a photo of a pie billed gerbe which turned out very good ( photo is posted in wild life section ) with the bad lightning and how far away the gerbe was, it came out pretty good after a few min in light room. could not crop it that much or the photo looked really grainy.. i shot some leaves and trees and things that were close to the lens, the images looked great and they were very sharp but they were just random crappy images. i was shooting wide open at 600mm and the images were very sharp. they still say F/8 is the sweet spot on this lens for sharpness, from what i was reading it was saying this lens wide open is sharper than the sigma 150-500 and the tamron 150-600 when they are stopped down. so ill see how true that is. . shooting things that were far away the photos were pretty grainy which is to be expected in bad lightning with high ISO and the subjects being way to far away to really get good photos of, so basically anything i was close enough too the IQ seemed very good.. cant wait till i get to try it out on a nice well lit day.
auto focus is crazy fast compared to my sigma 150-500, i would say probably 2x-3X faster and i did not get any hunting at all, it just quickly focused in on a subject and seemed to be dead on. the vibration reduction seems to work very well but this lens is heavy, at at over 6lbs its a bare to hand hold, hopefully i can get used to the weight, i just cant shoot birds on a tripod, it just seems to slow me down and i miss shots so i hand hold. its hard to keep the focus point on the subject due to having to hold up all that weight. i could keep the 150-500 lens pretty steady because it was lighter, a extra 2lbs does not sound like much but it definitely is allot of extra weight but the VR on the 150-600 sport seems to be working great, i did not get any blurry images.
the build quality of this lens seems excellent, the lock switch to lock the lens at any focal length to get rid of any lens creep is awesome. the lens cap is something i am not sure about, its made out of cloth and Velcros on to the lens. the inside of the lens cover is lines with microfiber like material which is just setting against the lens when you have the cloth lens cap on, not sure how i feel about that.. over all the thing just seems to be heavy duty and made well, when you zoom in and out it moves very smoothly, it just feels like a quality lens all the way around.
i do not like how the strap attaches to the lens. its basically at the end of the lens near where you mount the lens to the camera, so its not balanced well if you have the lens hanging from the strap. with the 150-500mm the strap was further out so the camera would balance more level and i could swing the camera down on my hip and walk around and it was comfortable, the 150-600 sport just wants to hang straight down when hanging from the strap so you almost need to carry it in your arms all the time and not just let it hang from the strap. also the strap it came with is not long enough IMO it goes directly around your neck and with the weight that sucks. i like to put the strap around my neck and under my arm so all the weight is not directly on the back of my neck. i do not really have enough room to do that with this strap, its not long enough to do this and be able to move the camera around freely while the strap is still around your body. i do not want to use the cameras strap because all the weight of the lens would be on the mount and that would not bee good, the support from the strap should be from the lens and not the camera body..