Sigma - 30mm 1.4 DC DN Contemporary Lens for select Sony APS-C E-mount cameras - Black Designed for use with APS-C Sony E-mount mirrorless cameras For use with your existing camera. 30mm focal length Accommodates a wide range of needs, including art, travel, portrait, specialty and wedding and event photography. f/1.4 maximum aperture Wide-open aperture performs exceptionally well in low-light settings. Provides remarkable depth-of-field control, so you can softly blur the background and draw attention to your subject. 1:7 maximum magnification ratio Helps you capture vivid details. Stepping motor Provides fast and accurate autofocus and is highly useful for video work. 11.8 inch minimum focusing distance Accommodates 52mm filters For use with wide range of filters and converters.