Temporary opening hours: 9am to 5pm / Mon - Fri
Click here for more info re: COVID-19 >>

Shop

SEND AN ENQUIRY

Got a question or product enquiry? Send us a message

FAST SHIPPING

Products in stock are generally shipped the same day.

Canon 7.6-137mm 4K UHD Lens

Code: CAN/CJ18ex7.6BKASE
The portable CJ18ex7.6B KASE is an important 4K UHD telephoto zoom lens that is part of our 2/3-inch UHDgc series. Its compact size and low weight support the high mobility shooting often entailed in documentary and many other genres of television field production.

For purchasing information    

Enquire Now

The portable CJ18ex7.6B KASE is an important 4K UHD telephoto zoom lens that is part of our 2/3-inch UHDgc series. Its compact size and low weight support the high mobility shooting often entailed in documentary and many other genres of television field production.

For those seeking a new lens for contemporary HDTV production - while also anticipating a future shift to 4K production - this lens enhances current HDTV optical imaging performance while potentially future-proofing for the longer term. The 18x zoom ratio supports a focal length range of 7.6 - 137mm. 4K resolution is maintained over this total focal range and across the 16:9 image plane.

New design strategies have extended the optical dynamic range to meet contemporary HDR imaging requirements. The lens also supports the wider color gamut specified in the international standard ITU-R BT.2020. An advanced digital drive unit deploying 16-bit encoders is fully compatible with the zoom, focus and iris controllers used with established broadcast 2/3-inch HDTV cameras. Three 20-pin connectors on the drive unit interface with these controllers (such as ZSC-300D and FPD-400D) while also providing a 16-bit interface to virtual systems. The unit empowers a variety of operational capabilities that are set up using the on-board display.

Features

Adding a New Version to the CJ18ex7.6B Series of Lenses

The CJ18ex7.6B KASE offers customers the same optical lens and electronic drive unit features as the existing CJ18ex7.6B IASE S/IRSE S lenses to those who do not need a 2x extender.

4K Optical Performance

The portable CJ18ex7.6B KASE 4K UHD lens was developed using our exclusive optical design technology to achieve superb optical performance, with 4K resolving power and high contrast from the center of the screen to the edges. High index optical glass materials, each having unique dispersion characteristics, help minimize chromatic aberrations and geometric distortion. Lens element surface accuracy has been improved significantly over HDTV lenses contributing to the enhanced Modulation Transfer Function (MTF) performance required of 4K imagery. New multi-layer optical coatings combined with new deposition processes produce a deeper black reproduction that is important to HDR imaging.

Minimized Chromatic Aberration

An optimized arrangement of fluorite and UD glass help minimize chromatic aberration, increasing image clarity with reduced color fringing on edges.

Reduced Ghosting

Special coatings and an internal lens barrel designed to prevent reflection result in clean black reproduction, less ghosting and flaring, sustaining high-tonality images that support HDR.

Compact and Lightweight

Weighing only 3.7 lbs. and measuring 6.3" (W) x 4.1" (H) x 8.1" (L), the portable CJ18ex7.6B KASE 4K UHD lens is similar in size to our 2/3" HD lenses, while delivering 4K performance and offering the mobility demanded in the reporting and documentary fields. The lens features the optimum construction and high durability of a conventional HD lens, while offering the same shooting style as that of existing 2/3" HD lenses.

The center of gravity is close to the mount, lessening strain on the hands and elbows of the camera operator. The ergonomic form factor creates a user-friendly design, including an ergonomic grip design for a comfortable feel during operation, helping to reduce fatigue and make it easy to move the camera about. The lens is sure to satisfy with its high-level combination of excellent specifications, enhanced optical performance and outstanding usability.

Specifications

Extender 1.0x
Focal Length 7.6-137 mm
Zoom Ratio 18x
Maximum Relative Aperture
(F number)
1:1.8 (7.6-103mm)
1:2.4 (137mm)
Angular Field of View 64.6° x 39.1° (7.6mm)
4.0° x 2.3° (137mm)
MOD 0.56m
Shooting Range at M.O.D. 65.5x36.8 cm (7.6mm)
3.8x2.1 cm (137mm)
Approx. Size
(w x h x l)
Approx. 6.3 x 4.1 x 8.1 in./
Approx. 160.5 x 105.0 x 206.2 mm
Approx. Weight Approx. 3.7 lbs/ 1.68 kg (KASE S, main unit only)