7Artisans has put its AF 18mm F2.0 Lite on sale today at $169, a Sony E-mount APS-C pancake that the company claims is the lightest autofocus F2 prime available for the format. The lens weighs 109 g (3.8 oz) and measures 32 mm (1.3″) long with a 64 mm (2.5″) diameter.

For working photographers, the practical pitch is a 27mm full-frame-equivalent field of view in a package that barely changes the footprint of an APS-C body — the classic street, travel and everyday-carry focal length. At $169, the lens undercuts most branded AF primes in that class by a wide margin, which is the segment 7Artisans has targeted across its autofocus lineup.

The specification sheet: a nine-element-in-seven-group optical design including one extra-low dispersion element and one high-refractive-index element, a nine-blade diaphragm, and a fast F2.0 maximum aperture. Minimum focus distance is 0.2 m (7.9″). The lens accepts 52mm filters.

Autofocus comes via a stepping motor, which 7Artisans says delivers fast, quiet performance suited to both stills and video. That claim is manufacturer language, not tested results — buyers should wait for independent reviews before assuming the AF tracking behavior matches first-party Sony lenses, particularly for paid video work where focus breathing and consistency matter.

The build includes a clicked aperture ring for on-lens control, an all-metal construction that 7Artisans describes as dust-sealed, and a USB-C port for firmware updates. The presence of firmware updating matters here: it gives 7Artisans a path to fix AF behavior on future Sony bodies after release, a real consideration for third-party lenses without licensed mount protocols.

The company has not published MTF charts or detailed weather-sealing specifications alongside the announcement, so optical performance and durability claims remain unverified until the lens reaches reviewers and working users.

The AF 18mm F2.0 Lite is available now for Sony E-mount at $169. How it performs against established options like Sony's own compact primes — and whether 7Artisans expands the Lite line to other mounts — will determine whether this becomes a genuine budget workhorse or a niche carry-around.