The 50-140 isn't exactly 2.8 70-200GM big so it might be fine. You can always just get the Slide to over compensate, it's honestly just a pretty comfortable strap.Actually you bring up a good point. The thing is, I will definitely be building up my Fuji lens arsenal: 16mm f/1.4, then the 50-140mm....you think the Slide Lite won't cut it with the heavier lenses?