My fingers are fully crossed. While a 400 2.8 with a built-in TC is tempting, my bread and butter is at 600mm and above. It makes sense that they would do it for both lenses, I guess we'll see.MIracles never cease. Never owned a 400 F2.8. i have had 300 F2.8, 500 and 600F4. 400 F2.8 w/ built-in TC makes sense for sports shooters. Wonder what this means for 600 F4?
Of course, the TC is still a rumor at this point too. Peter is usually right most of the time, but there is the occasional miss.