Canon CJ12EX4.3B IRSE Lens

Ground Breaking 2/3" 4K Wide Angle Portable Lens from Canon

Canon CJ12EX4.3B IRSE Lens

Canon CJ12EX4.3B IRSE Lens

Ground Breaking 2/3" 4K Wide Angle Portable Lens from Canon


Cat no: 18133

  • Exceptional focal length
  • Stunning optical performance
  • Lightweight and compact design
  • Effortless use with existing Canon HD Lens accessories 
Price match

Estimated Delivery 7 to 10 days

£14,995.00 (ex vat) £17,994.00 (incl vat)

Finance from £337.09 per month - view more details

Canon CJ12EX4.3B IRSE Lens

Ground Breaking 2/3" 4K Wide Angle Portable Lens from Canon

The Canon CJ12EX4.3B IRSE Lens is a ground-breaking 2/3” 4K wide angle portable lens with 12x zoom and focal length that extends from an exceptional 4.3mm at the wide end to 52mm. Compact and lightweight, it’s the perfect way to bring high-quality 4K resolution to ENG and studio applications. Easily make the move to 4K shooting with this high quality 2/3” 4K ultra-wide angle portable zoom lens.

  • 4K resolution 2/3” portable wide angle lens with 12x zoom
  • Exceptional 4.3mm focal length at the wide end extends to 52mm (104mm using the built-in 2x extender)
  • Stunning optical performance right to the edge of the image when paired with a 2/3” 4K compatible camera
  • Combines 4K quality with lightweight design and compact size comparable to HD lenses for comfortable on-shoulder shooting
  • Sustained 4K performance even when using the built-in 2x extender
  • Proven, high-quality 16-bit encoder captures precise information on zoom, focus and iris and allows support for aberration correction immediately on start-up
  • 3 20-pin connectors make for effortless use with existing Canon HD lens accessories and virtual systems.

Canon’s first 2/3” 4K portable lens
The CJ12ex4.3B is the first in Canon’s 2/3” 4K lens range. A lightweight portable wide-angle lens featuring a 12x zoom, its exceptionally short focal length is just 4.3mm at the wide end, enabling users to capture impressive wide-angle shots like car interiors. Focal length extends to 52mm with full zoom applied (104mm using the built-in 2x extender) to create even more shooting options and possibilities. Current HD lens users will find the CJ12ex4.3B integrates seamlessly with 2/3”4K broadcast cameras and setups while delivering consistently stunning performance in a wide range of ENG and studio environments.

Breathtaking optical performance
Striking 4K resolution and high contrast are sustained uniformly from the centre to the edge of the image thanks to Canon’s proprietary optical design technologies. Contrast and resolution remain consistent throughout the focus and zoom ranges, in both the HDTV and 4K frequency bands. The lens features a host of clever features that prevent colour bleeding and minimise ghosting and flare: leaving you with stunning quality right to the edge of the image.

Lightweight, compact and portable
The CJ12ex4.3B’s size and weight are similar to comparable HD lenses despite its significantly higher resolution. So users can easily apply the same shooting style as they would with a standard HD lens while enjoying all the advantages of 4K. At just 2.1kg and 248mm total length, the lens can sit comfortably on the shoulder for extended periods. Canon’s ergonomic drive unit further helps to minimise user fatigue: a big plus for shoulder-mount shooting.

Smart, reliable and interoperable
Operating the CJ12ex4.3B is straightforward, and great results are easy to achieve, thanks to the lens’ breakthrough design. 4K performance is maintained throughout the entire zoom range; and the 0.5 second zoom speed is the same as found on HD lenses. So you won’t need to adjust the way you shoot to enjoy the lens’ 4K quality. There is no need to invest in new accessories because the zoom and focus demands for existing Canon HD portable lenses are fully compatible.

Proven 16-bit encoding
When you need to start shooting at speed, there’s no frustrating wait to initialise the lens at power-on, because the new generation digital drive unit includes Canon’s proven 16-bit encoder that enables immediate support for shooting with aberration correction on start-up without initialization. This 16-bit encoder gives you highly-detailed positional information on zoom, focus and iris, so you can match virtual images and actual images with precision and ease. Three 20-pin connectors make for easy virtual operation in full servo mode when the lens is used in a virtual system.

Key Features:

  • Exceptional focal length
  • Stunning optical performance
  • Lightweight and compact design
  • Effortless use with existing Canon HD Lens accessories 

Product Specification

Object Image Format 2/3"
Aspect Ratio 16:9
Zoom Ratio 12x
Focal Length Range 4.3 to 52 mm
Focal Length Range with Extender 8.6 to 104 mm (with 2x extender)
Angular Field of View
  • 96.3° x 64.2° at 4.3 mm
  • 10.5° x 5.9° at 52 mm
Angular Field of View with Extender
  • 58.3° x 34.9° at 8.6 mm (with 2x extender)
  • 5.3° × 3.0° at 104 mm (with 2x extender)
Maximum Relative Aperture (F-Number)
  • 1:1.8 at 4.3 to 40 mm
  • 1:2.4 at 52mm
Maximum Relative Aperture (F-Number) with Extender
  • 1:3.6 at 8.6 to 80 mm (with 2x extender)
  • 1:4.8 at 104 mm (with 2x extender)
MOD From Front of Lens 1'(0.3 m)
Scene Object Dimensions at MOD
  • 30.1 x 17" (76.4 x 43.0 cm) at 4.3 mm
  • 2.3 x 1.3" (6.0 x 3.4 cm) at 52 mm
Scene Object Dimensions at MOD with Extender
  • 15.0 x 8.46" (38.2 × 21.5 cm) at 8.6 mm (with 2x extender)
  • 1.2 x 0.6" (3.0 × 1.7 cm) at 104 mm (with 2x extender)
Dimensions (L x W x H) 9.8 x 6.4 x 4.3" (25 x 16 x 11 cm)
Weight 4.6 lb (2.1 kg)

This product includes:

  • Canon CJ12EX4.3B IRSE Lens

Canon's European CPS programme is a completely free service that offers Canon professional photo and video users exclusive access to a range of benefits. These include access to CPS support at major events; a priority repair service; and local CPS support in selected European countries. Free back-up equipment loans during repair periods are also available, depending on the level of your CPS membership. Information about CPS is now available in 12 languages — to find out more please select your CPS territory/language from the drop down menu above.

The service operates on a three-tier basis to provide a programme that’s accessible, responsive and tailor-made to the needs of professional photographers. The appropriate level of CPS membership will be automatically assigned to you depending on the number of qualifying bodies and lenses that you registered with CPS.

For CPS Video membership videographers must own one qualifying Canon professional camcorder. For a full list of qualifying CPS Photo and CPS Video products please visit the link ‘view qualifying products’ here.

The countries that currently offer the European CPS programme are: Austria, Belgium, Croatia (Silver membership only), Czech Republic, Denmark, Finland, France, Germany, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania (Silver membership only), Russia, Slovenia (Silver membership only), South Africa, Spain, Sweden, Switzerland, Turkey (Silver membership only), the United Arab Emirates (Silver membership only), UK and the Ukraine (Silver membership only).

Professional photographers and videographers can also register for CPS membership in the following 23 countries: Algeria, Azerbaijan, Bahrain, Belarus, Bulgaria, Cyprus, Egypt, Estonia, Georgia, Greece, Iceland, Israel, Jordan, Kazakhstan, Latvia, Lebanon, Lithuania, Malta, Oman, Qatar, Saudi Arabia, Serbia, and Slovakia. Although CPS repairs and loans are not available in these 23 countries all registered CPS members from these countries can take advantage of CPS repair and loan benefits when they travel to the 27 countries (named in the paragraph above) that do offer these services.

To find out what CPS can do for you or to register please click the link below.

Canon Professional Service

* Finance available to UK incorporated limited companies only

Photolease Company Finance from £337.09 (ex VAT) per month.

All lease figures below exclude VAT. Finance available to UK incorporated limited companies only.

Term (months) First Payment Monthly Payments Admin Fee Total Payment
60 £437.09 £337.09 £100.00 £20,325.26
48 £498.87 £398.87 £100.00 £19,245.62
36 £603.53 £503.53 £100.00 £18,227.16
24 £811.96 £711.96 £100.00 £17,187.10
12 £1,436.50 £1,336.50 £100.00 £16,138.05

Select "Photolease finance" as the payment option at checkout. Finance is only available to UK incorporated limited companies. A minimum basket total of £1,000.00 applies, Photolease will normally contact you within one hour of receipt of your application if sent during business hours of 9am - 5pm (BST), Monday to Friday.

Photolease Ltd  is an independent finance company specialising in leasing equipment to the creative industry. Visit for more information as well as their terms and conditions. Offer is subject to status. Terms and conditions apply. Written details available upon request.

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