I received my 35-100E yesterday and all test out 100%, just like the 20-35E. I must say that it is a rather good size lens, but these two are probably a good pair for travel. I’m sure that my primes would outperform the zooms, but I don’t believe that other than a slightly brighter aperture, there isn’t a practical difference in performance for me. There is quite a difference in size & weight, but that was a known going in and the straps attached to the Falcam cage increases my confidence in strap carry vs the Hasselblad lugs.