Zeiss S88 Instructions For Use Manual

Also see for S88: Instructions for use Instructions for use Instructions for use

126 OperationG-30-1426-en S88 Floor Stand with Lifting Column Issue 9.0Printed on 28. 01. 2009OPMI® VISU 150 / 200: setting the adjustment speed for focus and X-Y coupling as a function of the zoom settingIn this mode, you can select dynamic speed control for focusing and theX-Y coupling.The depth of field of the optical system changes as a function of the zoomsetting:– If a large field of view (low zoom value) is used, this results in a largedepth of field, and the focus must be adjusted over a wide range to ob-tain a sharp image. The X-Y coupling therefore needs to be adjustedwithin a wide range to reach the position required. This means thathigh adjustment speeds should be used in this case.– A small field of view (high zoom value), on the other hand, results in asmall depth of field, and the focus has to be precisely set within a smallrange to achieve sharp image definition. The X-Y coupling thereforeneeds to be precisely adjusted within a narrow range until the positionrequired is reached. This means that it is advisable to use low adjust-ment speeds for this purpose.It is therefore a useful feature that the adjustment speed of the focus andX-Y coupling can be varied in accordance with the zoom setting.The instrument has been factory-adjusted for HIGH variation of the ad-justment speed as a function of the zoom setting. The best effect of dy-namic speed control is achieved if an adjustment speed of 1.0 has beenselected in the speed mode.Note:The dynamic speed control is based on the basic speed selected for fo-cusing and the X-Y coupling in the speed mode.If you have already set a high adjustment speed for focusing and the X-Ycoupling in the speed mode, dynamic speed control may possibly not beeffective across the entire zoom range, as the maximum adjustmentspeed is reached beforehand.In the extreme case, if you have set the basic speed for focusing and theX-Y coupling to the maximum value of 10, dynamic speed control willhave no effect at all.In configuration mode 1, the bottom section (SPEED FUNCT:) of the dis-play and key field permits you to select a high, medium or low value forthe dynamic change of speed, or to deselect dynamic speed control:HIGH LOWMEDIUM OFFConfigurationmode 1MODE STORE MANUALFOOTLEFT C:PHOTOFOOTRIGHT D:PHOTOSPEEDFUNCT:HIGH