I have a question for others out there concerning this lens.I used to shoot the 70-300 exclusively and was waiting for the new version of the 80-400 to come out.I saved diligently and when it was released I bought it.I have heard nothing but good about this lens and I am getting some very good shots with it from time to time. However, it seems like I struggle with getting it to focus with the AF system. I have tried multiple different settings and combinations to see if maybe my sensors are just struggling to choose a focus point.I have even shot on AF-C with a single point and still have this challenge.I find the lens seems to search and jump around alot when I am on a subject, especially one up close, which really seems counter-intuitive to me.When out a ways it doesnt jump as much but I still find many of my photos out of focus.I probably get 70% of my images out of focus and very rarely do I get the one I wanted in focus.I am using a tripod with a ball head, a monopod with a ball head, or a bag to shoot from in all cases (I am absolutely positive it is not a camera movement issue - I do get some with this issue as well but that's on me). I am shooting trying to keep my Shutter Speed at or above the max focal length of the lens and yes I am accounting for the crop factor in that as well (so my 400 becomes a 600 and I try to always be around 800 or above whenever possible). I have many pictures where there is something in the frame that is in very sharp focus and it always seems to be behind the subject I wanted in focus.So, here are my questions: Could this simply be caused by my lens and camera focus point not being in tune or do I ahve an issue with my lens and/or camera? Is this something I can take care of? If so, how?I don't seem to have this problem with other lenses.Very frustrated as I saved a while for this lens and was very excited about it but now this has kinda taken the wind out of my sails so to speak. Hopefully someone on here has some knowledge they can share.Thanks for your consideration
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