Canon 50-1000mm T5-8.9 Cine Zoom (EF Mount)

Description

With the advance of digital cinematography, most new digital cine cameras have made use of the entrenched large global inventory of 35mm motion picture film lenses. Digital cinematography has squarely encompassed the emerging 4K movement – in both the television -centric UHD and the cinema-centric 4K digital motion imaging production formats.
In the broadcast industry, large-format cameras and lenses for digital cinema are now being adopted for applications such as dramas, documentary programs, and promotional videos because of their superb imaging characteristics.
Documentary, sports coverage and natural history programs seek extended focal ranges. Such focal ranges in the Super 35mm image format size with full 4K optical performance, pose significant challenges to size and weight of the lens.
In recognition of this pressing production need, the CN20×50 IAS H ultra-telephoto zoom lens in Super 35mm format has been developed, significantly extending the imaging capabilities of 4K large-format cameras.

Powerful 4K images created by unprecedented 1500mm focal length

The CN20x50 IAS H is a zoom lens for the Super 35mm format, having the superiority of the longest focal length of 1500mm (with a 1.5× extender) and the highest zoom ratio of 20× in the world of the Super 35mm format that offer a whole new image expression.
Built-in 1.5× "4K" extender is another first in the large format optical arena, which maintains excellent 4K image quality.
The lens weighs only 6.6 kg and has an overall length of only 405.2mm a combination that will readily support carryable documentary, natural history and sports shooting.

4K Optical Performance

The 4K optical performance is carefully managed across the entire image plane to ensure superb subjective sharpness especially on the wider angle settings. Sophisticated computer simulation in the design phase produced an excellent final optimization that maintains the 4K optical performance over the entire focal range even when the built-in extender is in use and over an object distance ranging from the minimum object distance to infinity.
New glass materials assisted in the goal of achieving the necessary tight control of optical aberrations.
The most contemporary multilayer optical coatings ensure very high contrast by their superb control of black reproduction augmented by optical and mechanical design innovations that substantially reduced flare and any internal reflections.
Similar attention to minimization of ghost images and other highlight-related color bleeding extend the operational contrast range of the lens.


Imaging Excellence with Optimized Operational Performance


Lens with ultra-long focal length, 4K optical performance, and high carryability

The lens has a 1,500mm focal length at the telephoto end (with a 1.5x extender), a total length of 405.2 mm (PL mount), and a weight of 6.6 kg. Even when shooting documentaries in a harsh natural environment, this lens enables unprecedentedly expressive and dynamic 4K images at a distance from the subject.


Studio Broadcast Lens Controllers

When used in a studio lens-camera configuration the CN20×50 IAS H drive unit has three 20-pin connectors that facilitate the use of Canon standard broadcast zoom and focus controllers (such as the ZSD-300D and FPD-400D).


Servo Cine Lens

The CN20×50 IAS H has a newly designed digital servo system that employs the miniature 16-bit optical encoders that endow the control of zoom, iris, and focus with the same legendary precision for which Canon is world-famous in the 2/3” ENG/EFP domain. This new digital drive system is compact and lightweight while providing impressive power to actuate the full 20:1 zoom range in 1.5 seconds – ensuring image capture in critical moments. Wide-ranging zoom speeds up to a maximum of 180 seconds support special creative shooting. The encoders do not require any initialization operation and accordingly the system starts immediately upon switch-on.


Immediate system start-up

The drive unit has a high-performance encoder so that the lens requires no initialization. Since the encoder does not require the initialization operation when the lens is powered on, the system can be started immediately.


Support for Virtual Image Data Output

The drive unit has a 20-pin connector which outputs 16-bit precision data for zoom, iris, and focus to support precision virtual imaging systems.


Standard Broadcast Camera Interface

A 12-pin connection cable from the drive unit carries the standard serial communication for broadcast lenses – ensuring that the CN20×50 IAS can be used with all professional Super35mm digital cine cameras. The camera supplies power to the drive unit via this connection and remote iris operation is supported.


Iris close function

The lens can close the iris completely, which is necessary to calibrate black balance.


Flange-back adjustment mechanism

The lens enables flange-back adjustment with an operation as easy as that of broadcast ENG lenses.


Operability and functions ideal for broadcast lens users

The lens offers the equivalent servo operation feel as broadcast portable lenses for all focus, zoom, and iris controls. The focus ring is provided with a knurled rubber for superior operability, which allows the equivalent manual operation feel as broadcast portable lenses.


World’s first built-in 1.5× “4K”extender

The lens has a built-in 1.5× extender, which makes it the first zoom lens with a servo unit for Super 35mm sensor cameras. The lens is capable of 4K resolution performance even when a 1.5× extender is inserted.


Display for easy user settings

The display of the lens drive unit enables easy operation of digital functions such as speed and frame presets and shuttle shot in the same way as Canon’s high-end broadcast portable television lenses.

Speed Preset:A specific zoom speed can be preset in memory
Frame Preset:An angle of view can be preset in either of two memories
Shuttle Shot:Automatically shuttle between two focal length.


Macro function

The lens enables macro shooting with an operation as easy as that of broadcast ENG lenses.


Robustness and durability

The lens features an optimal housing structure made by combining the know-how acquired through the development of Canon broadcast lenses with the latest simulation technologies. The lens provides a robustness and durability that can endure in severe operating environments for broadcast applications.