Sigma 50MM F/2.8 EX DG Macro Lens For Canon
Sigma 50mm f/2.8 EX Macro DG Standard Lens for Canon EOS DSLRs (Canon EF). A development of Sigma’s highly regarded 50mm EX Macro lens first developed in 1998, this new model has been optimised to give high quality results when used with digital SLR cameras. Special areas of attention have been the reduction of ghosting (caused by layers on the image sensor) and lateral chromatic aberration.
The 50mm focal length is an ideal setup for all-round use and close-ups alike. It gives sufficient control over perspective and depth of field as well as allowing a close working distance suited to objects, whereas a longer focal length may be more suitable for animal and insect subjects for example but at the expense of depth of field. It is also worth noting that the 50mm EX Macro DG lens in this fitting has a minimum aperture of f/45 for amazing depth of field, so critical for macro shooting.
The floating focus system of this lens assures precise focusing at any focusing distance.