7Artisans has announced the AF 40mm f/2.5 FE, a compact full-frame prime lens. As part of the company’s Lite Series, the new lens emphasizes portability, autofocus performance, and affordability, arriving with a retail price of $159. Weighing approximately 3.17 ounces (90 grams) for the E-mount version, the 7Artisans 40mm f/2.5 FE lens is designed to be nearly unnoticeable on camera, while aiming to deliver what 7Artisans describes as a “golden balance” focal length suited to everyday photography. Measuring about 2.48 inches in diameter by 1.57 inches in length (63 by 40 millimeters), the compact form factor aligns with the Lite Series’ focus on portability. The lens features a plastic exterior construction and uses a 46mm filter thread. Its optical design consists of six groups with seven elements, and it incorporates nine aperture blades for rendering out-of-focus areas. With a 40mm focal length and a field of view of 56.1°, the lens sits between traditional 35mm and 50mm primes.…