Article ID: ART136230 | | | Date published: 05/13/2015 | | | Date last updated: 10/22/2015 |
Description
Solution
Fine Adjustment of AF’s Point of Focus
Fine adjustment of the AF’s point of focus is possible for viewfinder shooting and in Live View shooting’s [Quick mode]. This is called “AF Microadjustment”. Normally, this adjustment is not required. Do this adjustment only if necessary. Note that performing AF Microadjustment may prevent correct focusing from being achieved.
Adjust All by Same Amount
Set the adjustment value manually by adjusting, shooting, and checking the result. Repeat this until the desired adjustment is made. During AF, regardless of the lens used, the point of focus will always be shifted by the adjustment amount.
1 Select [AF Microadjustment].
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2 Select [All by same amount].
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3 Press the <INFO> button.
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4 Make the adjustment.
5 Check the result of the adjustment.
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Adjust by Lens
You can perform AF Microadjustment for each lens and register the adjustment in the camera. You can register the adjustment for up to 40 lenses. When you autofocus with a lens whose adjustment has been registered, the point of focus will always be shifted by the adjustment amount.
Set the adjustment manually by adjusting, shooting, and checking the result. Repeat this until the desired adjustment is made. If you use a zoom lens, make the adjustment for the wide-angle (W) and telephoto (T) ends.
1 Select [Adjust by lens].
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2 Press the <INFO> button.
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3 Check and change the lens information. Check the lens information.
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Enter the serial number.
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About the Lens Serial Number
In step 3, if “ * ” appears in front of the 10-digit lens serial number, you cannot register several copies of the same lens model. Even if you enter the serial number, “ * ” will remain displayed.
The lens serial number on the lens may differ from the serial number displayed on the screen in step 3. This is not a defect.
If the lens serial number includes letters, enter only the numbers in step 3.
The location of the serial number differs depending on the lens.
Some lenses may not have a serial number inscribed. To register a lens that has no serial number inscribed, enter any serial number in step 3.
If [Adjust by lens] is selected and an Extender is used, the adjustment will be registered for the lens and Extender combination.
If 40 lenses have already been registered, a message will appear. After you select a lens whose registration is to be erased (overwritten), you can register another lens.
Adjusting Single Focal Length and Zoom Lenses
4 Make the adjustment.
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5 Check the result of the adjustment.
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When shooting with the intermediate range (focal length) of a zoom lens, the AF’s point of focus is corrected relative to the adjustments made for the wide-angle and telephoto ends. Even if only the wide-angle or telephoto end has been adjusted, a correction will be made automatically for the intermediate range.
Clearing All AF Microadjustment data
When Clear all] appears at the bottom of the screen, pressing the <> button will clear all the adjustment data set for [All by same amount] and [Adjust by lens].
The AF’s point of focus will vary slightly depending on the subject conditions, brightness, zoom position, and other shooting conditions. Therefore, even if you perform AF Microadjustment, focus may still not be achieved at the suitable position.
The adjustment data will be retained even if you clear all the camera settings. However, the setting itself will be [Disable].
It is best to make the adjustment at the actual location where you will shoot. This will make the adjustment more precise.
Using a tripod when making the adjustment is recommended.
To check the result of the adjustment, setting the image size to JPEG L (Large) and the JPEG quality (compression) to 8 or higher is recommended.
The adjustment amount of one step varies depending on the maximum aperture of the lens. Keep adjusting, shooting, and checking the focus repeatedly to adjust the AF’s point of focus.
AF adjustment is not possible for Live View shooting’s [Live mode] and [u Live mode] (contrast AF).