When it comes to portrait photography, few lenses are as revered as the 135mm F1.4. Known for its stunning sharpness, background separation, and creamy bokeh, this focal length is a favorite among professionals who want to capture artistic portraits with depth and emotion. In this article, we take a close look at the Sigma 135mm F1.4 AF  and compare it side by side with similar lenses from Canon and Nikon. Our goal is to find out how Sigma’s optical design, autofocus, and bok