The Sigma DG Aspherical Macro is a 24 mm - 70 mm f/2.8 lens that quickly switches to manual mode to suit a user's preferences. A f/2.8 aperture and 24 mm-70 mm focal length lend welcome adaptability in all shooting environments. The fact that the aperture stays constant during operation of this Sigma camera lens gives faster, sharper exposures, particularly when capturing subjects indoors. Furthermore, an optional lens hood on this Sigma camera lens works to reduce extraneous light in outdoor environments, further boosting the contrast of colors, along with overall clarity. The multi-coated exterior of the Sigma DG Aspherical Macro quickly contributes color correction and meets the needs of professional photographers with ease. Additionally, the macro effects of this 24 mm - 70 mm f/2.8 lens produce impeccable sharpness when focusing on objects at close range such as flowers or pets. Users who pair the Sigma DG Aspherical Macro with their Canon or Nikon cameras benefit from fine, accurate representation of both still and moving subjects.