The Sigma 35mm f/1.4 DG HSM Art Lens for Sony E-Mount sets a new benchmark for performance, offering quality that exceeds expectations in every way. 16mm focal length 13 elements in 11 groups 63.4° angle of view (35mm) 9, rounded diaphragm blades The Sigma 35mm f/1.4 DG HSM Art Lens for Sony E-Mount delivers the highest level of brightness and beautiful bokeh effects. It offers the unique characteristics that only a large-aperture F1.4 lens can offer – shallow depth of field along with superior low-light and hand-held performance. High resolution with beautiful bokeh effects The aspheric lens at the front of the lens series helps minimise both distortion and vignetting. The rounded diaphragm produces an attractive round bokeh effect at large-aperture settings. Optimised power distribution minimises sagittal coma flare. Coma of point light sources near the edge of the image and axial chromatic aberration are both minimised, making the lens an excellent choice for photographing night-time landscapes and heavenly bodies. A masterpiece large-aperture wide-angle F1.4 lens The 35mm F1.4 DG HSM Art Lens for Sony E-mount, FLD (“F” Low Dispersion) glass, which is equivalent to fluorite in its characteristics and SLD (Special Low Dispersion) glass help optimise the power distribution of the lens. This optimisation minimises axial chromatic aberration by causing the different wavelengths of light to strike the same focus position while also minimising transverse chromatic aberration. In addition, aspheric lenses help minimise astigmatism and field curvature. Thanks to these features, resolution is extremely high from the centre to the edges of the photograph.