Sigma 50mm f/1.4 is a large aperture prime lens with a standard focal length of 50mm is ideal for digital cameras. This lens has superior peripheral brightness and provides high contrast image even at the maximum apertures. It is ideal for several type of photography such as portrait, landscape and reportage.

The fast F/1.4 aperture and rounded 9 blade diaphragm creates an attractive blur to the out of focus areas. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override.

Specification

• Lens Construction : 8 Elements in 6 Groups
• Angle of View : 46.8 degrees
• Number of Diaphragm Blades : 9 Blades
• Minimum Aperture : F16
• Minimum Focusing Distance : 45cm
• Maximum Magnification : 1:7.4
• Filter Size Diameter : 77mm
• Dimensions Diameter : 84.5mm X Length 68.2mm
• Corresponding AF Mounts: Canon, Sigma, Nikon, Sony, Minolta, Pentax, Four Thirds
• Reminder:
  • Pextax SFX and SF7 cannot be use as of this writing
  • If the camera body does not support HSM, auto focus will not be available

Reduced Ghosting and Flare
The super multi-layer coating reduces flare and ghosting. It provides high contrast images even when the subject is backlit.

Correction of sagittal coma flare
The molded glass aspherical lens elements provide excellent correction of sagittal coma flare. It is ideal for astronomical photography and shooting for the illumination.

It creates an attractive blur with a large aperture in portrait shooting.   This Sigma EX 50mm f/1.4 lens retails around $ 460.00 US dollars and discounts are available with some retailers or via online shopping.

Comment
This Sigma 50mm f/1.4 does out perform the existing Canon 50mm f/1.4 EF lens that comes with a 58mm filter size and does not come with a stabilizer as well.

In general; it is said that it's good to have a larger filter size lens with a larger aperture when working with lens that don't have some sort of stabilization on them.

Specially; when you have a habit of not using a flash.