Sigma_35mm_f1As the first lens released under Sigma’s Art line, the 35mm F1.4 DG HSM features a maximum aperture of 1.4 for outstanding performance in low light, and a stunning bokeh background effect to emphasize the subject. Other features include: one “F” Low Dispersion (FLD) glass lens and four Special Low Dispersion (SLD) glass lenses to ensure exceptional correction of lateral and axial chromatic aberration, Super Multi-Layer Coating to reduce flare and ghosting and provide sharp and high contrast images even in backlit conditions, and an HSM (Hyper Sonic Motor) that ensures high speed, accurate and quiet AF. Thermally Stable Composite (TSC), which has high affinity to metal parts, that are housed internally, increases overall functionality, lifespan, and quality of the lens, while the round-ed 9-blade diaphragm creates an attractive blur to the out-of-focus areas of the image. Further details can be found at www.sigmaphoto.com.