A Higher Standard in Studio Lenses
That Will Not Compromise Your Budget
E20x8B IE 8-160mm 1:1.5
Canon proudly announces the latest addition to our line of economical yet high quality studio lenses, “SUPER E20”. The “SUPER E20”, also known as the E20X8BIE, incorporates many of the same features and functions as the J20 Super, the standard of the broadcast industry with more than 2000 units sold worldwide.
Those features include our exclusive “IF” Internal Focus System and the optional “CROSSOVER” System for seamless 4X3 and 16X9 production on switchable cameras.
When used in conjunction with portable cameras, the “SUPER E20” features a unique Built In Supporter for the lens and camera combination.
HIGH MTF PERFORMANCE
The height of the 16:9 format is 20% shorter than that of the current 4:3 format, thus the scanning lines are 20% greater. As a result, higher resolution is required for the 16:9 format. In order to achieve this, the "SUPER E20" Provides minimum aberrations by the employ- ment of 3 group IF (Internal Focusing),
3 Group Internal Focusing
In Canon's unique IF system, the front section is divided into three groups- concave, convex
By employing the 3 group IF system, the lens can achieve minimized variation
DIMENSIONS
of aberrations while focusing, minimized distortion and a high optical performance even though SUPER E20 has a wide angle thats starts from 8mm.
CANON"CROSSOVER"SYSTEM
All the Super series of lenses, including the new SUPER E20 are now optionally available with "CROSSOVER" compat- ibility for most 16:9/4:3. The 4 position extender turret incorporates a 0.8x "CROSSOVER" unit in addition to the normal extenders i.e. 1.0x, 1.5x, or 2.0x (Fig.2). When the camera switches to the 4:3 mode, the extender turret rotates to the 0.8x position. The 0.8x "CROSSOVER" unit reduces the diameter of the image from 11mm to 9mm thus shortening the focal length to produce an identical picture angle of view. In essence, the 0.8x "CROSSOVER" unit acts as a 1.0x extender for the switched 4:3 aspect ratio. (Fig.3)
3 Group Internal Focusing
Focus
Fig.1
1st 2nd 3rd
Crossover | CROSSOVER SYSTEM |
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(optional) |
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| 1.5X |
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| 0.8X | or Spare |
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| 2X |
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| Fig.2 |
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16:9 (dia 11mm) |
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Extender | Focal Length |
| F stop | Extender | Focal Length |
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0.8X |
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1.0X |
| 1.5 | 1.2X |
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2.0X |
| 3.0 | 2.4X |
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Fig.3
120.5 | 120.5 | 530.9 |
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| F.B.=48 in air |
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