Canon CN-E85mm T1.3 L F Brochure (en)

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ERGONOMIC DRIVE UNIT
With the launch of the HJ14ex4.3B, Canon introduced a totally new 
design of the digital drive unit. Refined by long-term market research and 
worldwide experience, Canon mobilized the latest in 3D CAD-CAM design 
to significantly improve the human tactile interface to the control of Zoom, 
Iris, and Focus.
REDUCED PHYSICAL STRESS
By reducing the width of the drive unit, 
the palm of the camera operator’s hand 
is positioned closer to the optical axis, 
thus reducing the degree of arm bend 
which in turn lessens physical stress 
during prolonged shooting.
ERGONOMIC DESIGN
The size and curvature size have been optimized to 
more comfortably fit in the palm of the operator’s 
hand*
1
. Newly developed coatings help improve the 
tactile interface between the user and the drive unit*
2
 
together with the new Rubber Grip Support*
3
.
*As shown in diagram above.
IMPROVED EASE OF OPERATION
The spacing between the focus ring and 
drive unit has been changed to avoid 
accidental interference with the drive unit 
while manipulating the focus control.
HDgc SERIES
HDgc SERIES LENS CONCEPT
Corresponding to the popularity of digital High Definition broadcasting and diversity of  
HDTV equipment, Canon has added a series to its HDTV lens lineup, the HDgc series.  
The HDgc series supports the emergence of an important next generation of  
cost-effective HD acquisition systems. Adopting the advantages created by Canon’s unique 
technology, the HDgc lenses exhibit high MTF, high resolution and high contrast from the center 
of the image to its extreme edges, meanwhile maintaining its compact size and weight.
SDTV LENSES VS. HDgc SERIES
In the HDTV system, the pixel size is about half. Therefore, the spread of a point image caused by 
a spherical aberration should be diminished to about half. The MTF varies as the focus changes 
and even if the image is slightly out of focus, the MTF is greatly influenced, as shown in Graph 1. 
The HDgc lenses are specially designed to use optical elements that are effective in further 
minimizing chromatic aberrations, such as “Hi-UD Glass,” “Aspherical Elements,” and other special 
elements. The HDgc lenses greatly contribute to correcting and minimizing these aberrations at 
the same time, maintaining high MTF throughout the edge of the picture.
HDgc SERIES QUALITY
HDgc Series lenses are based upon Canon’s latest design concepts which support the next generation of cost-effective HD 
acquisition systems. HDgc lenses are designed to meet the specific bandwidth frequency (or the number of scanning lines) 
of these HD camera systems and at the same time, to offer an excellent performance-cost optimization.
SD
HDgc
Test Frequency of Broadcast Camera
320TV Lines/4MHz
up to 640TV Liness/8MHz
up to 800TV Lines
Test Frequency of Broadcast Lens
24 Lines/mm
up to 48 Lines/mm
up to 74 Lines/mm
Actual Canon Resolution of Broadcast Lens
up to 75 Lines/mm
up to 100 Lines/mm
The details of the HDgc lenses are shown on pages 31-34.
HDxs, eIFxs, AND 
HDgc
 TECHNOLOGY
In 2004, Canon introduced a new broadcast lens technology, eIFxs, by launching the J22ex7.6B.
The eIFxs technology consists of two applicable meanings for the letter “e.” One is the  
“ecological design.” The other is the “enhanced digital technology,” which improves the performance 
of the digital drive unit. Also, all of these advantages are inherited by the HDgc (IRSE/IASE model) 
and the HDxs lenses.
ENHANCED DIGITAL DRIVE
The HDxs, eIFxs, and the HDgc (IRSE/IASE model) series are equipped 
with an information display, a digital function selector, and an X-Y axis 
switch, so that the user can customize the enhanced digital functions 
easily and precisely. The design enables the user to fully bring out the 
digital functions. 
▪ 
  User settings are both simple and easy to operate. User settings include: 
speed preset, frame presets (2 memory positions), shuttle shot, zoom track, 
and focus preset with IASD/IASE lens.
   Follow signal display for Iris, Zoom, and Focus (IASD/IASE only) for virtual 
reality, robotic control, and other uses.
   User settings for Zoom and Focus curve mode allow precise control based 
upon the user’s requirement.
   AUX 1 and AUX 2 switches can be assigned for basic functions giving enhanced memory capability.
   A precise movement mode can be memorized for the zoom seesaw control, zoom demand control, and preset control.
   The drive unit can memorize 9 patterns of user-customized settings and also transmit the data between different drive units.
   The self diagnostic mode provides an error message, when applicable.
ROTARY ENCODER
Canon offers a series of HDxs, eIFxs, and HDgc (IRSE/IASE model) lenses, 
which are equipped with an enhanced Digital Drive Unit. 16-bit resolution 
Rotary Encoder Devices are built into the unit, so the lenses can simply be 
integrated into a virtual digital studio system without any additions. The 
encoders also enable superb precise control.
The Zoom Servo provides a dynamic range from 0.5 sec. to over a 5 min. super 
slow zoom. Repeatability in Focus and Iris control are also precise. Canon’s 
incredible technology has enabled the surprisingly small Encoder Device to be 
installed in the existing drive unit without any changes in size or weight.
ECOLOGICAL DESIGN
It is Canon’s policy to not pollute the Earth and, through research, Canon  
is quickly reducing its impact on the environment even further. The  
HDxs, eIFxs, and HDgc series have avoided using any materials or substances 
that could pollute the environment. The optical parts, featuring lead free glass, 
are designed to be completely non-polluting and the mechanical parts are 
virtually free of all harmful products to the earth, such as cadmium, PBBS*, 
PBDPE,** or mercury.
*PBBS: Poly Bromo Bi Phenyls  
**PBDPE: Poly Bromo Di Phenyl Ethers
LEAD-FREE GLASS
INFORMATION DISPLAY
INFORMATION DISPLAY
Lens with 
the optional 
Encoder Unit
Lens with Encoder 
Device included in  
the Drive Unit
REDESIGNED DRIVE UNIT
0
10
20
30
40
50
60
70
80
90
100
0.02
0.01
0
0.01
0.02
NTSC 400TVL(30lp/mm) 
F1.6
HDTV 600TVL(55lp/mm)
Defocus(mm)
GRAPH 1
MTF(%)
1
2
3
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