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11-11. Confirmation of AF focus by taking a picture
This section describes the method of checking the AF focus for your reference. It will enable you to
do the overall confirmation of the position of the AF focus, and also will be useful in the service.
[Required equipment] PC, AC adaptor, USB cable, AF master lens (95901 N57 or confirmed accurate lens
AF), AF chart for confirmation/ Scale for confirmation (attached the end of manual), SD card (for taking
picture), Lighting (If the fluorescent lamp is used for lighting, the Inverter lighting (Flicker-less) must be
used.), Image viewing software (For Example :ACDSee
TM
, Adobe Photo shop or other)
*If more accurate confirmation is necessary, use AF CHACKING STAND (95901 M150).
*When lighting AF CHACKING STAND, use fluorescent lamps (Daylight color) with the Inverter
lighting (Flicker-less).
*When confirming the focus under the fluorescent lamps (Indoor), set the WB to fluorescent lamps.
①Attach the lens to the camera, and set the lens aperture to A position.
②Set the camera as follows.
Capture mode: AV (Aperture-priority) mode, Focus mode SW: AF, Focus point: Spot,
White Balance: Daylight color, Recorded pixels: Default setting, Quality Level: Default setting,
Color Saturation: Normal, Image Sharpness: Normal, Contrast: Normal
③Set the aperture to open position by Av dial of camera.
④Set the chart and scale as follows. Lighten the chart so that the white portion of chart becomes EV12 or
more.
⑤Set the camera so that the distance from the chart to camera becomes 1m.
⑥Turn the distance ring of the lens to infinity (∞) by depressing the shutter button halfway while covering
the front of lens with the white paper.
⑦Take three pictures of chart while aiming the focus point of center (for Spot) to the border line between
white and black chart.
⑧The same manner with above. Turn the distance ring of the lens to minimum focus distance and repeat
above (7), for confirming vertical sensor, set the camera at vertical position.
⑨Display the images on the computer with image viewing software.
⑩Confirm the camera in focus on chart.
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