Ricoh PENTAX K-3 Mark III Faq page 19

2. Setting of the camera
Items
1 Distance
Zoom Position
2
*in case of Zoom lens
3 Focus point
4 Light source
5 Condition of the object
6 Diaphragm
3. AF fine adjustment procedures
Follow the numbers (1) to (6) below.
(1) Focus with the [Phase Matching AF].
(2) Shoot as it is or set Live View display.
(3) Check the focus on the captured image or Live View mode.
If you have the focus you like, you are done.
If not, go to step (4).
(4) Judge if it is the Front Focus or Back Focus.
There are the following confirmation methods.
1) Focus the subject with Phase-Matching-AF and set the AF-MF switch to MF.
2) Switch the Live View display to ON
3) Make a judgment by slowly moving the focus ring in a certain direction while looking at
the enlarged display of the target subject (focusing point) on the LV screen.
・Move to the infinity index side and when it comes into focus, it tends to be in front focus,
and when it is out of focus, it tends to be in back focus.
・On the contrary, if you move it to the near side from infinity index and it comes into focus,
it tends to be in the in the back focus.
[Remarks] ????
(5) From the result of step (4), set AF fine adjustment by the following steps 1) to 5).
1) At the C7 Function customization menu, select [AF Fine Adjustment] and press the right
of the 4-way key twice to display the setting menu.
As a guide, set the chart from camera about 30 to 40 times of
focal length. (Ex.) f=50mm x40 =2m(2000mm)
Recommended telephoto end which has narrower depth of field
and easy to find focus point.
Set the center of SEL with AF.S mode or user's favorite focus
point.
Outdoor with sunlight or same as actual capture condition.
Observe not to reflect any direct light on the target chart.
Set the target chart to parallel with the camera.
Recommended fully opened aperture which has narrower
depth of field and easy to find focus point.
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