Tokina AT-X 17-35mm f/4 PRO FX Lens for Canon EF

Constant f/4 aperture across the entire 17-35mm zoom range ensures consistent exposure and depth of field control, making this Tokina AT-X PRO FX lens a reliable choice for full-frame Canon EF shooters.

Overview

The Tokina AT-X 17-35mm f/4 PRO FX is a wide-angle zoom lens designed for full-frame Canon EF cameras. It covers a versatile focal length range from ultra-wide 17mm to standard 35mm, with a constant maximum aperture of f/4. The optical design includes 13 elements in 12 groups, featuring two aspherical elements and two SD (Super-low Dispersion) elements to reduce aberrations and improve sharpness. A 9-blade rounded diaphragm contributes to smooth bokeh. The lens focuses as close as 28 cm, allowing for dramatic close-up wide-angle shots. It uses an internal focus mechanism, so the front element does not rotate during focusing, which is convenient when using polarizing filters. The front filter thread is 82 mm, and a lens hood (BH-821) is included.

What stands out

• Constant f/4 aperture for consistent exposure throughout the zoom range
• Ultra-wide 17mm starting focal length with 103.9° angle of view
• Advanced optics with 2 aspherical and 2 SD elements
• 9-blade rounded diaphragm for pleasing out-of-focus areas
• Internal focusing and non-rotating front element
• 82mm filter thread for standard accessories

Technical details

• Lens type: Wide-angle zoom
• Focal length: 17-35mm
• Maximum aperture: f/4 (constant)
• Minimum aperture: f/22
• Lens mount: Canon EF
• Format compatibility: Full-frame
• Angle of view: 103.9° - 63.4°
• Minimum focus distance: 28 cm
• Maximum magnification: 0.2x
• Optical design: 13 elements in 12 groups
• Diaphragm blades: 9, rounded
• Autofocus: Yes
• Focus type: Internal focus
• Filter size: 82 mm
• Image stabilization: No
• Hood model: BH-821 (included)
• Special elements: 2 aspherical, 2 SD (Super-low Dispersion)
• Series: AT-X PRO FX

Our verdict

A solid wide-angle zoom for Canon full-frame users who need a constant aperture and robust build without the bulk of f/2.8 lenses.