Canon J55X9B with Semi-Servo Controls, ULM and Case – USED

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Canon J55X9B with Semi-Servo Controls, ULM and Case

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Description

Canon J55X9B with Semi-Servo Controls, ULM and Case

The extremely high performance levels of the “55xSuper” with its 9mm wide angle have been prefered over all other lenses in its class. This lens will now be appreciated even more in the 16:9 format. The new and improved “Super 55” can include Canon’s optional “Crossover System” which accommodates for the loss of wide angle in the 4:3 mode in some of the dual aspect ratio switchable camera systems. The redesigned circuitry of the “Super 55” realizes improvements in RF noise protection and its improved mechanical design offers a modern look with easy accessibility for user friendly maintenance. Of course , the “Super 55” includes the best features of the 55xSuper like the superb wide angle of 9mm , the light weight of 18kg and the extremely sharp picture quality even at the telephoto side.

HIGH MTF PERFORMANCE
The next generation of 16:9 format has become more widespread world-wide. 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 SUPER55 provides the optimum balance of aberrations by Hi-UD glasses
(High Index Ultra Low Dispersion glass) and Canon’s unique fluorite. The SUPER55 succeeds in having the higher MTF performance, correspondent to 6MHz, necessary for the 16:9 format.

CANON “CROSSOVER” SYSTEM
All the Super series of lenses, including the new Super 55 are now optionally available with “CROSSOVER” compatibility. 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 CCD switches to the 4:3 mode, the extender turret rotates to the 0.8x position. The 0.8x
“CROSSOVER” unit reduces the diameter from 11mm to 9mm thus shortening the focal length to produce an identical picture angle. In essence, the 0.8x “CROSSOVER” unit acts as a
1.0x extender for the switched 4:3 aspect ratio. Fig.3 shows the relation between focal length and the magnification of the extenders.

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