Canon's HJ21ex7.5B IRSE lens features a standard ENG digital drive with servo zoom and manual focus control. The latest generation of Canon's HDTV lenses continues to live up to their three basic philosophies: high quality images ease of operation and high specifications. These lenses feature enhanced digital technology that improves the performance of the digital drive unit while maintaining the advanced optical design concept based on the X-Element technology.
Canon's new series of HDTV ENG/EFP lenses are equipped with the e-II Drive Unit the next generation drive unit included with the rotary encoders. An encoder is a digital potential detector that makes the zoom/focus control much more precise and repeatable. By adopting a unique technology Canon has made the Encoder Device surprisingly small allowing it to be installed in the existing drive unit without changing it's size or weight.
FEATURES
3-group Internal Focus System
HDTV Production use
Digital Drive Unit
X-Element & Power Optical System
Equipped with Canon's original Rotary Encoder Device
This lens is also available with focus and zoom servos. Ask for Canon HJ21ex7.5B IASE HDTV Zoom Lens (CN-CN-HJ21ex7.5B-IASE).
SPECIFICATIONS
Zoom Ratio: 21x
Built-in Extender: 2.0x
Range of Focal Length: 7.5~158mm
Range of Focal Length with Extender: 15~316mm (2.0x)
Maximum Relative Aperture (with extender): 1:1.9 at 7.5~116mm 1:2.6 at 158mm 1:3.8 at 15~232mm 1:5.2 at 316mm (2.0x)
Angular Field of View (with Extender) in 4:3 Aspect Ratio (8.8 x 6.6mm): 60.8° x 47.5° at 7.5mm 3.2° x 2.4° at 158mm 32.7° x 24.8° at 15mm 1.6° x 1.2° at 316mm (2.0x)
Angular Field of View (with Extender) in 16:9 Aspect Ratio (9.6 x 5.4mm): 65.2° x 39.6° at 7.5mm 3.5° x 2.0° at 158mm 35.5° x 20.4° at 15mm 1.7° x 1.0° at 316mm (2.0x)
Minimum Object Distance (M.O.D.): 0.85m (10mm with Macro)
Object Dimensions at M.O.D. (with Extender) in 4:3 Aspect Ratio (8.8 x 6.6mm): 110.1 x 82.6cm at 7.5mm 5.1 x 3.8cm at 158mm 55.1 x 41.3cm at 15mm 2.6 x 1.9cm at 316mm (2.0x)
Object Dimensions at M.O.D. (with Extender) in 16:9 Aspect Ratio (9.6 x 5.4mm): 120.4 x 67.7cm at 7.5mm 5.6 x 3.2cm at 158mm 60.2 x 33.9cm at 15mm 2.8 x 1.6cm at 316mm (2.0x)
Macro: No
Size (W x H x L): 179.9 x 122.3 x 260.1mm
Weight (Approx): 5.81lbs (2.63kg)
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