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11-04-2014, 09:09 AM   #1
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DA* 55 won't focus

so i turned my camera after many days, and when i press focus .. nothing happens

my camera is k5 and my lens da* 55.

is it an sdm failure?

//ysf

11-04-2014, 09:13 AM   #2
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First try to clean the contacts on the lens and on the camera to make sure it's not just dirt or film oil. Use a dry microfiber cloth works very well.
11-04-2014, 09:13 AM   #3
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Make sure :

- AF switch on the lens is on AF
- AF switch on the body is on AF (AFC or AFS)

if nothing change so far, then :

-remove the lens, and put it back again

if nothing change :

- remove the lens, clean contact, try another lens.

If nothing change :

- I can't help you any further
11-04-2014, 10:04 AM   #4
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QuoteOriginally posted by aurele Quote
If nothing change :

- I can't help you any further
- Battery charged?


Steve

11-04-2014, 10:12 AM   #5
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Original Poster
did all of this, but didn't work .. went through plenty SDM posts this forum and there was a tip which worked for me ..

try doing the manual focus while pressing the shutter release .. this kicked the motor back in action ..

thanks for the help guys .. saved me a scare.

QuoteOriginally posted by aurele Quote
Make sure :

- AF switch on the lens is on AF
- AF switch on the body is on AF (AFC or AFS)

if nothing change so far, then :

-remove the lens, and put it back again

if nothing change :

- remove the lens, clean contact, try another lens.

If nothing change :

- I can't help you any further
11-04-2014, 11:16 AM   #6
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QuoteOriginally posted by techmulla Quote
did all of this, but didn't work .. went through plenty SDM posts this forum and there was a tip which worked for me ..

try doing the manual focus while pressing the shutter release .. this kicked the motor back in action ..

thanks for the help guys .. saved me a scare.
This should not be needed. If your lens is still under warranty, I would request service.


Steve
11-05-2014, 01:57 AM   #7
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QuoteOriginally posted by stevebrot Quote
This should not be needed. If your lens is still under warranty, I would request service.


Steve
unfortunately, it is not. maybe i should count the days to SDM failure then?
11-05-2014, 08:16 PM   #8
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Probably yes. I sold my last SDM. The first sign is stiff focusing after a period of non-use. After that there may be strange sounds and finally no sound and no focus. The good news is that Pentax's new lenses (motorized) use DC motors which are as dependable as they get.

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