the FUJINON XF16-55mmF2.8 R LM WR is a different breed. This lens is built to offer the versatility of a zoom lens with the ultimate image quality of a prime. The XF16-55mmF2.8 R LM WR is a fast, standard zoom providing a constant F2.8 aperture throughout. That means it’s not only useful across a broad range of subjects, but it can also be used in all sorts of challenging lighting conditions.