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 / 114 mm size mount for professional cinematographers matte-boxes and accessoriesFilter 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 mmSide Code Barrel with engraved lens size - immediate lens coding for production crew reportsPRIME 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 15mm/f2,8 is a cine-mod of ZEISS Distagon T* 2,8/15 world class optics.
Aspherical design
The aspherical lens design ensures consistent imaging performance throughout the entire focusing range as wellas sharpness to the periphery of the image. The asphere's more complex surface profile can reduce or eliminatespherical 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 arereduced to a minimum throughout their entire focusing range. This is achieved by variation of the axial distancebetween individual lens elements or groups. This adjustment of the lens-to-lens distance is coupled to the distancesetting to ensure correct compensation at all times. The mechanical construction of these lenses is extremely complexand they must be assembled with utmost precision both of which are key competencies of ZEISS.
Excellent resolution and high contrast
Richly saturated and vivid colours are a must in the creation of lasting impressions.However, stray light within an optical system leads to a lightening of the image that is particularly noticeablein the shadows. This reduces image contrast, with the result that exposures lack contrast and appear faded.To avoid this, ZEISS combines various specially developed technologies to reduce the undesirable effects of stray light.
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 throughelaborate optical designs at all focal lengths.
Homogeneous image quality throughout the image field
ZEISS lenses are famous for their extraordinary image quality. Even with challenging subjects, perspective,color and light are optimally rendered throughout the entire 35 mm image field. For this reason, we place great emphasison particularly high image quality, e.g. low distortion and outstanding stray light reduction for rich colors.