Most digital sensors are sub-full-frame, which means they’re smaller than the standard 35mm-sized full-frame sensors found in professional and prosumer cameras. Given in 35mm equivalence, this means that sub-full-frame lenses will have a field of view that approximates much longer lenses on a full-frame camera. Fujifilm currently offers three lightweight wide-angle zooms for their X-series mirrorless cameras, which have an APS-C crop factor of 1.5x. With a 35mm equivalent focal range of 15-36mm, their widest is the new XF10-24mm ƒ/4 R OIS. It has a stepping motor for video work and a minimum focusing distance of only 9.45 inches, useful for macro shots. Additionally, the XF18-55mm ƒ/2.8-4 R LM OIS lens is equivalent to 27-84mm, while the XC16-50mm ƒ/3.5-5.6 OIS offers a range of 24-76mm. The XC16-50mm ƒ/3.5-5.6 lacks an aperture ring, so it’s much more lightweight than the other options at less than half a pound. Fujifilm’s OIS Optical Image Stabilization promises between 4 to 4.5 stops of shake reduction. List Price: $699 (XF18-55mm ƒ/2.8-4 R LM OIS); $799 (XC16-50mm ƒ/3.5-5.6 OIS); $999 (XF10-24mm ƒ/4 R OIS).
Given the 2.0x crop factor of the Micro Four Thirds system that Olympus and Panasonic use for their respective mirrorless camera systems, wide-angle zooms are a bit of a challenge, as focal lengths are effectively doubled. Olympus has the M.Zuiko ED 9-18mm ƒ/4.0-5.6, their widest zoom, with an equivalent range of 18-36mm. The M.Zuiko Digital ED 12-40mm ƒ/2.8 PRO lens has a range of 24-80mm, while the ED 14-150mm ƒ/4.0-5.6 is equivalent to 28-300mm. The Zuiko ED 18-180mm ƒ/3.5-6.3 has 36-360mm equivalence, a really nice reach for a single zoom even though it starts out not very wide. The M.Zuiko Digital ED 14-42mm ƒ/3.5-5.6 II R and EZ lenses, which stands for Electronic Zoom, are a popular choice for their basic 28-84mm coverage at reasonable price points. The M.Zuiko ED 12-50mm ƒ/3.5-6.3 EZ will provide more coverage than the 12-40mm ƒ/2.8 PRO at half the cost. List Price: $299 (M.Zuiko Digital ED 14-42mm ƒ/3.5-5.6 II R); $349 (M.Zuiko Digital ED 14-42mm ƒ/3.5-5.6 EZ); $499 (Zuiko ED 18-180mm ƒ/3.5-6.3); $499 (M.Zuiko Digital ED 14-150mm ƒ/4.0-5.6); $499 (M.Zuiko ED 12-50mm ƒ/3.5-6.3 EZ); $599 (M.Zuiko ED 9-18mm ƒ/4.0-5.6); $999 (M.Zuiko Digital ED 12-40mm ƒ/2.8 PRO).
Because mirrorless designs like the Micro Four Thirds system require shorter flange distances, lenses are often much lighter and smaller than larger-sensor APS-C and full-frame models. Panasonic also sports the Micro Four Thirds mount system in its LUMIX line of mirrorless cameras with 2.0x magnification of angle of view. So the LUMIX G VARIO 12-32mm ƒ/3.5-5.6 ASPH lens is equivalent to a 24-64mm while weighing less than a fifth of a pound. The G VARIO 14-140mm ƒ/3.5-5.6 ASPH is a bigger lens at a larger cost, but the field of view is equivalent
to a massive 28-280mm 10x zoom. With a fast constant aperture and weather resistance, the G X VARIO 12-35mm ƒ/2.8 ASPH lens is comparable to 24-70mm, an essential focal length for pro photographers. Panasonic’s widest option is the G VARIO 7-14mm ƒ/4.0 ASPH, also with a constant aperture. List Price: $349 (LUMIX G Vario 12-32mm ƒ/3.5-5.6 ASPH); $699 (G VARIO 14-140mm ƒ/3.5-5.6 ASPH); $999 (G X VARIO 12-35mm ƒ/2.8 ASPH); $1,199 (G VARIO 7-14mm ƒ/4.0 ASPH).