CN-E85MM T1.3L F
- Compatibility with Canon EF lens mount
- 4K optical performance
- Focus breathing minimised
- Newly designed 11-blade aperture diaphragm for soft, attractive blur
- Engraved focus and iris markings on angled surfaces
- Metric/non-metric unit for focus marking available
- Sturdy but user-friendly build quality for demanding productions
- Anomalous dispersion glass to reduce chromatic aberration
EF LENS MOUNT COMPATIBILITY
The CN-E85mm T1.3L F cinema lens opens up widespread lens compatibility options for professional filmmakers who wish to embrace Canon’s long-established, and wide-ranging, EF lens mount system that was originally introduced for EOS SLRs in 1987.
OUTSTANDING OPTICAL PERFORMANCE
The lens delivers exceptional 4K (4096x2160 pixels, compared to the 1920x1080 pixel count of Full HD), optical performance and offers compatibility with Super 35mm-equivalent cameras, full-frame, APS-C and APS-H cameras.
Employing anomalous dispersion glass that's effective in eliminating chromatic aberration, plus large-diameter aspherical lenses, the lens achieves high-resolution imaging from the centre of the frame to the outer edges.
CINEMA USER-FRIENDLY HANDLING & FOCUS/IRIS CONTROL
The CN-E85mm T1.3L F lens weighs 1.3kg and offers a sturdy build that’s user-friendly for demanding productions. It features focus and iris markings that are engraved on angled surfaces for improved readability from behind the camera.
Featuring the distinctive ‘resistance’ of cine lenses the lens offers outstanding manual control. The lens offers a focus rotation of approximately 300 degrees and facilitates precise focusing performance.
An aperture diaphragm with 11 leaves creates gentle, attractive blurring for cinematographic effects.
This prime lens can be used with standard manual and electronic movie industry accessories, and other equipment such as matte boxes. Featuring a unified front lens diameter and uniform gear positions, the lens does away with the need to adjust or reposition accessory gear when switching between other lenses in the Canon Cinema Lens series.
ANOMALOUS DISPERSION GLASS
To reduce chromatic aberration the CN-E85mm T1.3L F prime lens employs anomalous dispersion (AD) glass. When light passes through a lens, it refracts (bends). It also breaks up into its constituent colours, just like light passing through a prism. The lower the refractive index of the lens material, the less it bends and the sharper it can be focused. Similarly, the lower the dispersion ratio, the less the light is broken up, which makes it easier to correct chromatic aberration.
AD glass is similar to fluorite in that it features a low refractive index and low dispersion. Using AD glass Canon has been able to manufacture lenses with superior performance and at a lower cost than before.
LARGE ASPHERICAL LENSES
Within the optical construction of the lens large aspherical lenses are deployed to reduce distortion and deliver unrivalled optical performance. In the early days, all lenses were spherical – they are the easiest lens shape to make, but are not best suited to rendering a sharp image as they cannot make parallel rays of light converge at the same point. This causes a problem called spherical aberration. Canon designers discovered that an aspherical (non-spherical) lens shape would eliminate these spherical aberrations, because the curvature of the lens could be used to converge the light rays to a single point.