PRIME CIRCLE XT Cine-Mod for ZEISS ZF.2 Lenses (including lens)

Still photography ZF.2 lenses mets professional cine-style features.
Ultra Lightweight design, engineering and precision grade manufacturing.
Teflon Impregnating Hard Anodizing (TIHA) for heavy duty, scratch resistance and lifetime work.
Ergo-Gear, innovative follow-focus gear featuring also handheld ergonomics grip.
Aperture gear de-clicked and dampened for smooth aperture action.
Front Mount with 95mm size mount for professional cinematographers matte-boxes and accessories
Filter thread 90mm for PRIME CIRCLE 90 Series professional step -down filter rings.
Canon EF-Mount with stainless-still heavy duty professional bayonet.
Exclusive SIDE INDEX VIEW for easy to read focus/aperture settings!
Innovative X-Circle Cine-Lock bayonet with improved locking mount for cine-style focus work.
Front Mount with circular engraved grooves for superior flare and reflection control.
Full coverage Full-Frame 24x36 mm
Side Code Barrel with engraved lens size - immediate lens coding for production crew reports
PRIME CIRCLE XT is designed by a cinematographer on the field to improve shooting quality!
Dedicated matte-box with sliding compensating base (MAT-BOX)
Custom Flight - Cases in flight hand luggage size!


PrimeCircle XT 25mm/f2,0 is a cine-mod of ZEISS Distagon T* 2,0/25 world class optics.

Aspherical design

The aspherical lens design ensures consistent imaging performance throughout the entire focusing range as
well as sharpness to the periphery of the image. The asphere's more complex surface profile can reduce
or eliminate spherical aberration and also reduce other optical aberrations compared to a simple lens.

Floating Elements Design

Today’s camera technologies and high-resolution sensors demand continuous improvement of lens performance.
Thanks to the use of the latest floating element design principles, optical aberration effects in ZEISS lenses are
reduced to a minimum throughout their entire focusing range. This is achieved by variation of the axial distance
between individual lens elements or groups. This adjustment of the lens-to-lens distance is coupled to the distance
setting to ensure correct compensation at all times. The mechanical construction of these lenses is
extremely complex and they must be assembled with utmost precision – both of which are key competencies of ZEISS.

Virtually distortion-free optics

Dramatic perspectives and a view from extraordinary image angles – ZEISS lenses open up new composition
possibilities. Distortion would disrupt the composition because straight lines, whose image does not go through
the image center, would be reproduced with a curved shape.  This annoying effect is accordingly and largely
compensated through elaborate optical designs at all focal lengths.

Ideal aperture with nine blades

Photographers want to guide the observer through the image. Minimal depth of focus is often used as a design element.
This keeps the background intentionally blurred to keep the attention of the observer on the main subject.
These different representations of the blurred areas, as well as the quality of the transition,
are referred to as the Bokeh of a lens. The finely tuned features of the optical design on ZEISS SLR lenses
ensure a particularly harmonious effect of the blurred areas of the image. The nine diaphragm blades and
the resulting, virtually circular aperture on ZEISS SLR lenses are crucial to favorable rendition of highlights
in the fore and background.

High-Speed Lenss

Impressive photographs captured in low light always begin with a fast lens for a system or SLR camera. Because,
a fast, high-performance lens captures as much light as possible. And a lens with a large maximum aperture leads to
the best results when shooting in unfavourable light.