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 18mm/f2,8 is a cine-mod of ZEISS Distagon T* 2,8/18 world class optics.

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.

Excellent image quality

The ZEISS range of T*® lenses offers the highest possible standards in terms of performance, reliability and, of course,
image quality. Quite simply, they are superior in every way. You can count on highly advanced flare control for crisp
and brilliant images, for example. And virtually zero geometric distortion, ensuring precise accuracy
when reproducing shapes – especially useful when photographing products and architecture.

Elaborate stray light reduction

Rich, vibrant colors are vital to creating a lasting impression. Stray light in the lens, however, would lead to a brightening
of the image, which is particularly visible in shadow areas. Image contrast is lowered; the image appears dull and bleached.
We combine various, elaborate techniques to reduce unwanted stray light. For example, all lens elements are coated
with the famous ZEISS T*® anti-reflective coating. Additionally, a jet black special paint is applied by hand to all lens
element edges to ensure that reflections are prevented from the start.

ZEISS T* anti-reflective coating

All lens elements in SLR lenses from ZEISS feature the T*® anti-reflective coating and an optical design that produces
brilliant pictures even in unfavorable lighting conditions. We vacuum deposit very thin, transparent coats on the surfaces
of the lens elements to make them anti-reflective. Special substances, one by one, are vaporized with very high energy
in a high vacuum, which are then deposited on the glass surface as a coating with precisely controlled thicknesses
to achieve the desired reduction of reflections. The first coatings were applied by ZEISS back in the 1930s.

High-quality all metal mounts

Noticeable quality and high value stability qualify ZEISS lenses for decades of intense use.
The high-quality craftsmanship of the all-metal mounts, the easy-to-grip metal focus and aperture ring and the robust
front bayonet and filter threads ensure an amazing photographic experience.