Viltrox AF 28mm f/4.5 Chip Lens (L-Mount)

The Viltrox AF 28mm f/4.5 Chip Lens (L-Mount) is an ultra-compact, ultra-lightweight full-frame autofocus pancake lens designed for photographers and creatives who are on the move, built for L-Mount mirrorless cameras including the Panasonic Lumix S9, Leica SL3, and Sigma BF. Measuring a mere 0.5 in. (13.2mm) deep, it preserves the minimal form factor of these compact L-mount bodies, making it an ideal everyday carry for street, travel, and portrait photography.

Optically, the lens uses a 6-element, 6-group design incorporating two ED (Extra-low Dispersion) elements and two aspherical elements, along with an HD nano multi-layer coating to help reduce flare and ghosting, plus a waterproof and anti-fouling front coating for easier daily cleaning. The lens features a fixed f/4.5 aperture, meaning aperture cannot be adjusted, and a polygonal aperture plate design produces a distinct, pronounced starburst effect around point light sources in backlit and night scenes.

Autofocus is handled by a VCM (Voice Coil Motor) system, delivering fast and quiet focusing performance, though unlike most autofocus lenses, the AF 28mm f/4.5 does not offer manual focus control. The lens has a minimum focusing distance of approximately 1 ft. (0.32m), yielding a maximum magnification of 0.11x. The lens fully supports L-Mount electronic communication protocols, including autofocus, Eye AF, face detection, EXIF data transmission, and in-camera lens corrections, and is officially certified within the L-Mount Alliance ecosystem for native compatibility.

Build quality uses a lightweight plastic construction paired with a precision metal mount for durability and secure attachment to the camera body. A distinctive integrated slide-lever lens cap allows the lens cover to be opened and closed without a separate cap, simplifying the camera package and protecting the optical elements when not in use. The lens does not accept front filters. It weighs just 60g (2.1 oz.) and measures approximately 2.4 x 0.5 in., making it comparable in size to a simple body cap.

As a full-frame L-mount lens, the Viltrox AF 28mm f/4.5 Chip delivers its full angle of view on full-frame L-mount bodies from Leica, Panasonic, and Sigma.

Key Features
– 28mm f/4.5 ultra-compact pancake prime lens for full-frame Leica L-mount
– Fixed f/4.5 aperture (not adjustable)
– 6 elements in 6 groups, including 2 ED elements and 2 aspherical elements
– HD nano multi-layer coating
– Waterproof and anti-fouling front element coating
– VCM (Voice Coil Motor) autofocus (no manual focus control)
– Distinct polygonal-aperture starburst effect
– Native L-Mount electronic communication (AF, Eye AF, face detection, EXIF, in-camera corrections)
– Integrated slide-lever lens cap
– Lightweight plastic construction with precision metal mount
– No filter thread (does not accept front filters)
– Minimum focusing distance of approximately 1 ft. (0.32m); 0.11x maximum magnification
– Extremely compact and lightweight (60g / 2.1 oz., 13.2mm length)
– Compatible with full-frame L-mount cameras (Leica, Panasonic, Sigma)