The Viltrox AF 15mm f/1.7 Air XF Lens is an ultra-compact, lightweight wide-angle prime lens designed for FUJIFILM X-mount APS-C mirrorless cameras. Priced at a budget-friendly $239 USD, this lens belongs to Viltrox’s "Air" series, which emphasizes portable form factors and high value for money. It provides a full-frame equivalent focal length of 22.5mm, rendering an 84.9° field of view ideal for street photography, landscapes, architecture, vlogging, and indoor environments.
Key Specifications & Design:
Optical Structure: 12 elements in 10 groups, featuring 3 Extra-low Dispersion (ED) elements, 3 High Refractive Index (HR) elements, and 2 Aspherical elements to control distortion and aberrations.
Physical Weight: Extremely featherweight at just 180 grams (6.35 oz).
Aperture Design: Bright f/1.7 maximum aperture to f/16 minimum, running on 9 rounded diaphragm blades for smooth background blur.
Focusing System: Internal focus powered by a quiet and rapid STM stepping motor.
Minimum Focus Distance: 0.23 meters (9.1 inches) with a 0.1x magnification ratio.
Filter Thread Size: 58mm front thread.
