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04-19-2022, 06:45 AM   #1
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a mysterious k3 af/mf-problem...

hello pentaxians,

have 2 pentax k3-bodies (prestige & silver) w identical firmware 1.43.
both cameras are set up identically.
when switching af/mf on body, one camera (the silver) reacts normally and shows af/mf on backmonitor.
the other one (the prestige) does not show the mf-mode on backmonitor. (see pics)

i hope I could explain my problem.

i've reloaded the firmware in the prestige several times - with no change.

are there any ideas?

thx!

~~~

strangely enough, this 2nd body (the prestige) works normally w lenses w an af/mf switch.

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04-19-2022, 07:22 AM   #2
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As I understand it does the "AF.A" not indicate whether MF or AF is activated, but instead show which AF tracking mode (S-single, C-continuous, A-automatic) is active
04-19-2022, 07:35 AM   #3
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Does the Prestige go into MF mode even though it says "AF.A" on the screen? Will the shutter release without focus confirmation/lock?
04-19-2022, 07:36 AM   #4
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Just checked my K3 with 18-135 attached and switching from AF to MF changes the display accordingly.
If set to AF.A and move the switch to MF, it shows MF.

04-19-2022, 07:39 AM   #5
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The AF/MF switch may be faulty. The meter mode switch on my K10D will only go into spot mode if I set it between spot and center-weighted. Try setting the switch between AF and MF.
04-19-2022, 07:45 AM   #6
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Does the screw-drive shaft retract on the camera lens mount when the switch is set to MF on the non working body?
If not it seems to be a mechanical failure on the switch.
04-19-2022, 09:07 AM   #7
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Original Poster
ah - manymany thanks for the replies and suggestions so far!

in the af mode the prestige works fine.
in the mf mode the af motor whirrs like a food processor.

1) when using a lens with an af/mf switch, the af works without any problems if the switch on the lens and body is set to af.
2) when using a lens with an af/mf switch, the camera focuses via af if the switch on the lens is set to af and the switch on the body to mf.

seems to be a switch problem on the body.
hargh...

thx folks!

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