| 摘要 |
The presentation device 100 comprises a shuttle operation member 170 rotatable in the forward and reverse directions. The shuttle operation member 170 comprises a momentary mechanism, returning automatically to the neutral position when the user releases the hand. When a sub-microprocessor 360 inputs from the shuttle operation member 170 signals representing operating direction and operating angle, on the basis of these signals, it determines a zoom direction and zoom speed, and by giving an instruction to a lens control microprocessor 127 or a picture signal processor IC 300 , performs optical zoom or digital zoom. By means of this correction, operability in zoom operations in the presentation device is improved.
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