I know the "official" spec on this lens lists the image circle as a paltry 310mm (barely hits the corners of 8x10), but have heard it may actually cover considerably more. I have read anecdotal reports that the 1200mm T-ED nearly covers 12x20, and there is one thread where a poster claims the 800mm and 120mm cover 11x14. I also know from expereince with the smaller Nikkor T-ED series that the 500mm and 720mm T-ED cover considerably more than the 360. In all the specs for the Nikon teles, they list the same image circle for all focal lengths within a given set. This doesn't make a lot of sense to me as intuitively I would think the image circle would increase with focal length (barring mechanical vignetting).
So, does anyone have any experience using the 800mm Nikkor T-ED on 7x17 (or even 11x14). If so, did it cover? Any left over for movements? What was the performance like in the corners?
Thanks,
Kerry
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