I’ve been dithering about whether to buy the new 100-400. I keep thinking it would be fantastic for nature photography, but on the other hand it would weigh as much as the rest of my X-T1 outfit put together, and if I am going to carry that much weight around, I might as well use my full-frame Nikon.
This evening it hit me: The big gap in Fuji’s lineup is that the 55-200mm lens doesn’t accept the teleconverters.
So…What I really wish they would make is a 55-200mm f/4 or even 100-200mm f/4. I think 200 f/2.8 would be too big, though it might be possible. The real point is that the lens must be able to work with the 1.4 and 2.0 teleconverters. That would give 280mm f/5.6 or 400mm f/8, either of which would be workable for a wide variety of contexts.
For that matter, 100-250mm f/4 would be nice too. The main point would be f/4 at the long end while remaining substantially smaller and lighter than the 100-400mm.