Canon HJ21ex7.5B-IRSE eHDxs 21x2/3" ENG Lens, 7.5-158mm (21x Zoom), 15-316mm (2x Extender) Focal Length


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About Canon HJ21ex7.5B-IRSE

The Canon e-HDxs HJ21ex7.5B-IRSE is a 21x 2/3" telephoto lens built to offer high performance in HDTV news gathering. The lens is lightweight and can be relied upon under harsh conditions. Additionally, it's equipped with features such as internal focus and shuttle-shot programmable positioning. The focal-length range is 7.5-158mm with a minimum object distance of 2.8' (0.9 m). This lens has a 2x extender for doubling focal length.

Canon HJ21ex7.5B-IRSE Features

  • Sophisticated Drive System: To make the lens easier to use, Canon has developed an advanced drive boasting all the features of the previous e-HDxs system. With improved human ergonomics in mind, the lens provides the highest level of comfort and versatility
  • High Definition Ready: Many high definition cameras are hamstrung by insufficient optics. Electronic Field Production (EFP) lenses traditionally have been built to accommodate standard definition. This lens is designed specifically with high definition in mind
  • Improved Image Quality: The lens element design greatly reduces aberrations and image distortions. These advances contribute to more balanced imaging from center to edge throughout the aperture range
  • Shuttle-Shot Technology: The lens has added capability when zooming, using the shuttle-shot switch. At the touch of a button, the lens can move to a pre-programmed point, going back and forth. This can also be used creatively while providing a no hassle way of verifying focus
  • Integrated 2x Extender: For instant close-up images, the lens has a switch that inserts an element that doubles the focal length at any point in the zoom range. Instead of using the zoom function the extender gives immediate close up images

Canon HJ21ex7.5B-IRSE Specifications

Image Format
2/3" CCD, 16:9/4:3
Focal Length
7.5-158mm (21x Zoom)
15-316mm (2x Extender)
Without Extender:
f/1.9 at 7.5-116mm
f/2.6 at 158mm
With Extender:
f/3.8 at 15-232mm
f/5.2 at 316mm
Iris Type
Focus Type
Horizontal View Angle
Without Extender:
65.2deg. at 3.5mm
3.5deg. at 130mm
With Extender:
35.5deg. at 15mm
1.7deg. at 316mm
Minimum Object Distance (M.O.D.)
2.8' (0.9 m)
Dimensions (W x H x L)
6.9 x 4.8 x 10.2" (17.5 x 12.2 x 25.9cm)
5.9 lbs (2.7 kg)
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