Viltrox Objektiv AF 13mm f/1.4 XF pro FUJIFILM X

The Viltrox AF 13mm f/1.4 XF lens is an elegant ultra-wide-angle prime lens that features portability, advanced optical design, and intuitive controls. Its fast f/1.4 maximum aperture balances size and speed and is suitable for working in available light conditions. It offers greater control over depth of field and provides a soft bokeh effect at wider apertures, while limiting the overall size and weight of the lens for everyday use. The lens is designed for smooth video shooting, effectively eliminating focus breathing when changing the focus distance during video recording, and the STM autofocus motor ensures fast and responsive autofocus down to a minimum subject distance of just 8.7".

Technical description of the Viltrox AF 13mm f/1.4 XF lens for Fujifilm X

The Viltrox AF 13mm f/1.4 XF is an ultra-wide-angle fixed lens designed for mirrorless cameras with a Fujifilm X mount and APS-C sensor format. The lens features a compact and lightweight body with a length of 90 mm and a weight of approximately 420 grams, making it comfortable for everyday carrying and shooting in various situations. With a focal length of 13 mm (equivalent to 20 mm on a full-frame camera), it provides a wide angle of view of 94°.

Optical design and image quality

The lens's optical assembly consists of 14 elements in 11 groups, including two aspherical lenses, two high-refractive-index lenses, and four low-dispersion ED glass lenses. This design significantly reduces optical defects such as distortion, chromatic aberration, and flare, ensuring sharp and contrasty images across the entire frame. Focusing is achieved by an internal ultra-lightweight system with a stepping STM motor, which is quiet and fast, suitable for smooth video shooting without unwanted focus breathing.

Aperture and depth of field

The maximum aperture of f/1.4 allows shooting even in low light conditions and makes it much easier to create images with a shallow depth of field. The lens is equipped with a nine-blade aperture that creates a pleasant and soft bokeh effect. The aperture range is from f/1.4 to f/16, allowing for high control over exposure and creativity when working with depth of field.

Focusing and minimum distance

The minimum focusing distance is 22 cm, which offers the possibility of close-up photography with a maximum magnification of 0.1×. Autofocus is accurate and responsive thanks to the STM motor with step guidance, allowing for easy switching to manual mode, which will be appreciated by both photographers and videographers.

Construction and control

The lens has a robust metal body with precise workmanship. There is a 67 mm thread on the front for attaching filters. The lens design is designed to minimize size and weight while maintaining high quality and functionality. The controls are intuitive, suitable for quick work in the field.

Additional features and compatibility

• Support for EXIF data transfer and firmware updates via USB-C port (must be verified with the specific model and retailer)
• Elimination of focus breathing when changing the focus distance, which is especially advantageous for video recording
• Compatible exclusively with Fujifilm X-mount cameras
• No optical stabilization, which is common for fixed focal length lenses in this category
• Suitable for landscape, architecture, interior, and street photography

Technical specifications

• Lens type: ultra-wide-angle fixed lens for APS-C
• Focal length: 13 mm (equivalent to 20 mm on full frame)
• Aperture: f/1.4 – f/16
• Optical construction: 14 elements in 11 groups
• Number of aperture blades: 9
• Minimum focusing distance: 22 cm
• Maximum magnification: 0.1×
• Filter diameter: 67 mm
• Dimensions (diameter x length): 74 x 90 mm
• Weight: approx. 420 g
• Mount: Fujifilm X

Conclusion

The Viltrox AF 13mm f/1.4 XF is a balanced ultra-wide-angle lens with high light sensitivity, high-quality optics, and fast focusing, suitable for demanding Fujifilm X camera users who require a wide angle of view combined with the possibility of shallow depth of field and smooth video recording.