In March 2007, Olympus announced a lineup of new lenses to accompany the replacement to the venerable E-1 Olympus pro SLR camera body, of which the 14-35mm f/2 SWD was one. Available since the first quarter of 2008, Olympus digital cameras use the four-thirds sensor format, which provides a 2x ''crop factor.'' This gives an effective field of view of 28-70mm in 35mm film terms.
