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Canon CJ20ex7.8B 2/3" 4K Broadcast Zoom Lens


4K UHD Portable Lens for 2/3” 4K camcorders

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The new Canon CJ20ex7.8B is a revolutionary 2/3” 4K portable lens with 20x zoom. An industry first, the new UHD 2/3-inch lens from Canon is a compact and lightweight companion to today's modern broadcast camera operator, and it’s the perfect way to bring high-quality 4K resolution to ENG and studio applications.

Over several decades of manufacturing portable HD zoom lenses for ENG and EFP, Canon HD lenses have earned enthusiastic support from customers the world over, due to their excellent specifications, superb optical performance, and long-term reliability. Now, Canon has developed the portable CJ20ex7.8B 4K UHD lens, combining outstanding optical performance and support for 4K UHD (and HDTV) broadcast production.

Featuring a focal length range of 7.8-156mm (15.6-213mm with the built-in 2x extender) and a 20x zoom ratio, the CJ20ex7.8B 4K UHD lens is able to maintain high 4K resolution and contrast from the center of the screen all the way to the edges.

The resolution around the edges has been improved by achieving advances in the inner focus system In addition to the improvements in optical performance, the CJ20ex7.8B 4K UHD lens is compact and lightweight, provides a balanced center of gravity, and incorporates refinements that enhance operability Canon has brought together technology and knowledge accumulated over many years to create the CJ20ex7.8B 4K UHD lens portable telephoto zoom lens. Moving forward, Canon will continue refining its technology and developing even better products to enable customers to capture images of the very highest quality.

Product Category
ENG Lens
Product Series
CJ20ex7.8B IASE S
Image Composition
Object Image Format
2/3 Inch
Aspect Ratio
Zoom Ratio
Focal Length Range
7.8 ~ 156mm
Focal Length Range with Extender
15.6 ~ 312mm (with 2x Extender)
Angular Field of View
63.2° × 38.2° at 7.8mm
3.5° × 2.0° at 156mm
Angular Field of View with Extender
34.2° × 19.6° at 15.6mm (with 2x Extender)1.8° × 1.0° at 312mm (with 2x Extender)
Optical Brightness
Maximum Relative Aperture (F-Number)
1:1.8 at 7.8~108mm1:2.6 at 156mm
Maximum Relative Aperture (F-Number) with Extender
1:3.6 at 15.6 ~ 216mm (with 2x Extender)1:5.2 at 312mm (with 2x Extender)
Scene Composition
MOD From Front of Lens
0.80 Meter (10mm with Macro)
Scene Object Dimensions at MOD
91.7 × 51.6cm at 7.8mm4.8 × 2.7cm at 156mm
Scene Object Dimensions at MOD with Extender
45.9 × 25.9cm at 15.6mm (with 2x Extender)2.4 × 1.4cm at 312mm (with 2x Extender)
Physical Attributes
6.7in (169.9mm)
4.5in (114.4mm)
9.1in (230mm) = length
4.81 lbs (2.18kg)



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1. Add products you would like to purchase to the basket (min total of £1000.00 without VAT).2. In payment method choose “Finance your order with Azule finance”3. Fill in the form (it takes less than 3 minutes) and choose a suitable term of finance.4. Once submitted you will receive an instant decision with further instructions

About Azule:
Affording Creativity, that’s our moto. We strive to help our customers achieve their true, creative potential and take risks with those willing to grow their business. For over 10 years we’ve been financing equipment for film, stills and broadcast specialists in the UK and across Europe. We’re here to offer fast reliable funding solutions to match your equipment requirements.1. WE are a friendly, approachable team; happy to offer you help and advice whenever you need it2. YOU only need to fill out a very quick and simple online form that takes 3 minutes3. YOU will either receivean instant application decision, or a response within 24 hours4. WE have 25 years of specialist industry experience covering broadcast, media, AV and photography5. WE will always do our best to find a solution to even the most complicated deals6. YOU can apply for finance through Azule from anywhere in Europe

Benefits of a lease
You use the kit over an agreed period Your payments can be offset against tax You pay VAT on each monthly instalment