Canon CJ20ex7.8B IASE S Brochure (en)

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4K OPTICAL PERFORMANCE
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CANON 4K UHDxs CJ20e 7.8B ZOOM LENS
This portable 4K lens offers an overall optical performance that will support a broad spectrum of 
program production genres for UHD broadcast television.  Featuring a 20x zoom ratio, the CJ20ex7.8B 
4K lens can achieve panoramic vistas and finely detailed close-ups that are central to evocative image 
making and powerful storytelling when captured in 4K UHD.
SUPERB OPTICAL PERFORMANCE
The lens optimizes all of the optical parameters that combine to 
produce amazing overall image performance – namely, sharpness, 
contrast, color and tonal reproduction. At the same time the optical 
design significantly minimizes the various monochromatic and 
chromatic optical aberrations that can mar an image.
SUPERB 4K OPTICAL PERFORMANCE,   
EVEN WITH THE BUILT-IN 2X EXTENDER
With its high-grade optical components and precision optomechanical 
assembly, the lens maintains 4K optical performance when the built-
in 2x extender is switched in.
APPLICABILITY AND OPERABILITY   
IDEALLY SUITED TO 4K SHOOTING
This long 20x zoom lens has a remarkably low weight of 2.18 kg – a 
combination that greatly empowers all forms of field production. The 
now well-established digital drive unit adds to that empowerment 
wby providing precision operational control and also programmability 
options for the same. The focus rotation angle has been carefully 
designed to further support rapid focusing of distant subjects.
COMPATIBILITY WITH HD LENS SYSTEMS
The standard zoom and focus controller systems currently used 
with Canon HD lenses are fully compatible with this new 4K lens*. 
The latest digital drive units that have proven to be so popular with 
users of Canon HD lenses are deployed with this new lens. Three 
high-performance encoders (which read out high-accuracy positional 
information of zoom, focus and iris) are featured, and Connectors 
provided on the digital drive unit deliver precision digital information 
to support virtual systems. When this 4K lens is used with standard 
HDTV cameras, there is higher image sharpness and minimized 
optical aberrations.
* The FPM-420D focus unit is not supported. 
The lens has a high zoom ratio of 20x that extends from the wide 
end of 7.8 mm to an impressive tele end of 156 mm, covering a 
popular zooming range that meets multiple applications.
HIGH ZOOM RATIO AND FREQUENTLY USED 
FOCAL LENGTH