Versatile Fast-Aperture Prime. The Voigtlander 40mm f/2 Ultron SL IIS Aspherical’s slightly wide focal length and bright maximum aperture give you extensive focus-placement control, making it great for selective-focus, shallow depth-of-field work, and working in low light. It’s also excellent for portraiture, architectural photography, and everyday shooting. Using a DX-format camera? You’ll get a 60mm-equivalent focal length.

Advanced Optical Design. This lens boasts a five-group/six-element double-gauss optical design that uses ultra-high refractive index glass elements and a double-sided aspherical element to produce sharp images while reducing chromatic and spherical aberrations.

Manual Focus. The 40mm f/2’s manual-focus design uses a scalloped focus ring to give you smooth, precise control. The lens has a 1:4 maximum magnification ratio and a 9.8-inch minimum focusing distance, while a nine-blade aperture contributes to pleasing bokeh.

High-Quality Build. The lens’s durable all-metal barrel includes depth-of-field and focus-distance scales to help with pre-focusing and hyperfocal focusing, and a built-in AI-S type CPU lets you use in-camera controls to adjust aperture settings for fast, intuitive exposure control.