Just occasionally, I feel that twice as much really is twice as good. The GF 500mm is Fujifilm’s longest telephoto medium format lens to date, doubling the reach of the GF 250mm F4 R LM OIS WR with the drop of just one f/stop in aperture speed. Naturally, once you take the inverted crop factor of medium format into account, it gives an ‘effective’ 396mm focal length in full-frame terms, but that’s nigh-on 400mm, taking it into super-telephoto territory and still delivering twice as much as the effective 198mm of the shorter lens.
