stevenmonrad

Experience of 100-400 on X-T2 (sometimes with the 1.4 TC for birds) and people- it's quite small and inconspicuous for the range. It works for a walk-around stealth camera almost anywhere. Focus, the newer bodies will do better for tracking and AF but I get an acceptable number of images. Excellent for the mid-range. Long range suffers as all lenses do from heat distortion, etc. On-body it fits into a quite small shoulder bag. Downside is the external movement which adds to dust accumulation inside, a reason not to buy used. The 100-600, like the white prime 200 an attention getter. Like the 50-140 it's an internal movement zoom, an advantage. I find the 50-140 can be useful for the mid-range with or without TC since the quality is so high that extensive cropping mimics tele-zoom. Both the 100-400 and the 100-600 in the overall scheme of photography are remarkably small and inexpensive. You don't need the 600 for sports. The 100-400 is currently on sale everywhere in a Fuji promotion.