Compare FUJIFILM XF 70-300mm f 4-5.6 R LM OIS WR Lens vs Sigma 100-400mm f 5-6.3 DG DN OS Contemporary Lens FUJIFILM X vs Tamron 150-500mm f 5-6.7 Di III VC VXD Lens FUJIFILM X vs FUJIFILM XF 100-400mm f 4.5-5.6 R LM OIS WR Lens