Canon HJ21x7.5B KLL-SC

Description

The Canon HJ21x7.5B KLL-SC is a professional high-definition cine-style zoom lens designed for 2/3-inch broadcast cameras. Combining a versatile 7.5–158mm focal-length range with a powerful 21× zoom ratio, the lens provides exceptional flexibility for television production, sports, live events, documentaries, commercials, and studio work.

Its wide 7.5mm end provides an approximately 65.2° horizontal field of view, while the 158mm telephoto end narrows to approximately 3.5°, allowing operators to move from wide establishing shots to tight subject coverage without changing lenses.

Key Features

• 21× professional HD zoom lens
• 7.5–158mm focal-length range
• 2× built-in extender
• 15–316mm effective focal length with extender
• 2/3-inch 16:9 image format
• B4 bayonet mount
• Fast f/1.9–2.6 maximum aperture
• Cine-style optical design
• High-definition optical performance
• Reduced focus breathing
• Reduced flare and chromatic distortion
• Manual focus and iris control
• Approximately 270° focus rotation
• Macro capability
• Designed for professional broadcast and cinema applications

21× Zoom Range

The 7.5–158mm focal-length range makes the HJ21x7.5B exceptionally versatile.

At 7.5mm, the lens provides a very wide perspective suitable for:

• Establishing shots
• Interviews
• Studio sets
• Live events
• Large interiors
• Stage productions

At 158mm, the lens provides a narrow telephoto field of view suitable for:

• Sports
• Concerts
• Performances
• Press conferences
• Documentary work
• Long-distance subject coverage

The lens provides a 21× optical zoom ratio without requiring a lens change.

Built-In 2× Extender

The integrated 2× extender dramatically increases the lens’s reach.

Without Extender

7.5–158mm

With 2× Extender

15–316mm

The extender provides substantially more telephoto reach while retaining the flexibility of the same lens. Canon specifies the maximum aperture with the extender as approximately f/3.8–5.2.

This makes the lens particularly valuable for sports, wildlife, concerts, live events, and productions where the camera cannot be positioned close to the subject.

Optical Performance

The HJ21x7.5B KLL-SC was designed as an HD cine-style lens rather than a basic standard-definition ENG lens.

Canon’s design emphasizes high-resolution imaging while minimizing optical problems such as flare, chromatic distortion, and focus breathing.

This makes it suitable for productions where a broadcast zoom needs to provide a more cinematic level of image quality.

Manual Cine-Style Operation

The KLL-SC version is designed for more controlled cinematic operation, with manual focus and iris controls.

The focus control provides approximately 270° of rotation, giving the operator considerably more control than a typical short-throw ENG focus control.

This makes the lens particularly useful for:

• Commercial production
• Dramatic television
• Narrative work
• Documentary filmmaking
• Controlled studio environments
• High-end interviews