The DZOFilm X-Tract 18–28mm T8 is a full-frame probe zoom lens designed for macro and specialty cinematography, offering a parfocal zoom range from 18 to 28mm with a constant T8 aperture. It delivers up to 2.1:1 magnification with a minimum working distance of 6mm from the front element and a minimum focus distance of 47.3cm from the sensor. The optical design includes 7 high-refractive and 6 low-dispersion elements to minimize distortion (±2%), chromatic aberration, and focus breathing (~0.5% at 24mm), while maintaining over 70% relative illumination. Mechanically, the lens weighs approximately 1.09kg, features standard 0.8 mod gears, a ±300° focus throw, and is built with anodized aluminum. It is available in multiple configurations, including straight, 90°, and 360° probe variants. The 360° version includes a rotating periscope and prism for variable viewing angles. The lens is IP57-rated for dust and water resistance up to 28cm and functions in temperatures from –30°C to 70°C. It comes in PL mount and includes accessories such as a UV filter, support bracket, and case, with pricing around $3,499–3,799 depending on configuration.
| Manufacturer | DZOFILM |
| Series | Probe Zoom |
| Model | X-tract |
| Focal Length | 18-28mm |
| Max Aperture | T8 |
| Min Aperture | T45 |
| Format | - |
| Image Circle | 43.2mm |
| Minimum Focus | 1ft 7in (from sensor plane), 6mm (from lens front) |
| Focus Rotation | 300° |
| Iris Blades | 10 |
| Optical Design | Direct:25/18, 90° Periscope:26/19, 360° Periscope:27/20 |
| Squeeze | none |
| Front Diameter | Direct:29.6mm |
| Filter Thread | - |
| Focus/Zoom Rod | none |
| Native Mount | PL |
| Data Protocol | none |
| Length | Direct:415mm |
| Weight | Direct:1090g, 90° Periscope:1132g, 360° Periscope:1144g |
| Body Telescope | none |
| Body Material | Aluminum |
| Focus Drive | Manual |
| Iris Drive | Manual |
| Zoom Drive | Manual |
Country of Origin: China
Release Date: -
Launch Price: -
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