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<blockquote data-quote="Geoffc" data-source="post: 143385" data-attributes="member: 8705">Well I got the 70-200 and teleconvertor back today. When I put the lens on the body by itself the fine tune set by Nikon is now -9 rather than -17. That is good and fits with the 24-120 moving about 8 points positive after the body was adjustedThe lens plus teleconvertor is now set at -20 by Nikon. I reckon it's still fractionally back focussing as its slightly sharper when focused with live view CDAF. My wife thinks I'm mad as she can hardly tell the difference in compare mode in Lightroom, especially at less than 100% zoom. My response is that a £2000 lens and converter is either perfectly in focus or it's not right. In reality the images are still pretty good for a lens with teleconvertor. I'm going to try it in actual use as I was not far from the subject in my test and I've learned over recent months that a lens that's perfect at 6 feet will not be at 100 feet, you have to choose where perfect is going to be set.I'll post my findings when I've played some more, but I think I'm going to tell Nikon the case is not closed just yet.</blockquote>

[QUOTE="Geoffc, post: 143385, member: 8705"] Well I got the 70-200 and teleconvertor back today. When I put the lens on the body by itself the fine tune set by Nikon is now -9 rather than -17. That is good and fits with the 24-120 moving about 8 points positive after the body was adjusted The lens plus teleconvertor is now set at -20 by Nikon. I reckon it's still fractionally back focussing as its slightly sharper when focused with live view CDAF. My wife thinks I'm mad as she can hardly tell the difference in compare mode in Lightroom, especially at less than 100% zoom. My response is that a £2000 lens and converter is either perfectly in focus or it's not right. In reality the images are still pretty good for a lens with teleconvertor. I'm going to try it in actual use as I was not far from the subject in my test and I've learned over recent months that a lens that's perfect at 6 feet will not be at 100 feet, you have to choose where perfect is going to be set. I'll post my findings when I've played some more, but I think I'm going to tell Nikon the case is not closed just yet. [/QUOTE]

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