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**Rondec** · 03-10-2018, 03:24 AM

Probably simply a weight issue. The K-S1 is very light and if you attach a heavier lens or even a flash, it probably dampens some of the shutter shock issues. Those who have reported it with the K-1 seem to think that the DFA 28-105, for some reason, is worse than the other DFA zooms.

alex-virt · 03-10-2018, 07:27 PM

Originally posted by ShawnH

Is it possibly a lens element vibration issue?

I don't think so. It happens with different lenses.

giuseppesavo · 04-27-2018, 08:52 AM

Originally posted by alex-virt

I recently bought a second K-S1 body with two kit zooms (18-55 and 50-200) and a small AF-200FG flash. Couldn't resist a great offer from the Canadian Ebay.
I can confirm that with the flash attached there is no shutter shock at 1/100s.

it has the same characteristics of k7 issue. With BG mounted on, the problem is reduced.
There will be a sort of resonance frequency giving blur as result.

alex-virt · 05-30-2018, 12:45 PM

Update: No shutter shock with the 70mm/F2.4 Limited lens.

ShawnH · 05-31-2018, 10:06 AM

It could be that your lens mount on your camera is somehow loose. That would explain why the viberation is lens dependent but not exclusive to one lens.

alex-virt · 05-31-2018, 06:32 PM

Originally posted by ShawnH

It could be that your lens mount on your camera is somehow loose. That would explain why the viberation is lens dependent but not exclusive to one lens.

I have two K-S1s both having similar vibration issues. It's highly unlikely for two cameras to have loose mounts.

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03-10-2018, 03:24 AM	#31
Rondec Loyal Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 27,663	Probably simply a weight issue. The K-S1 is very light and if you attach a heavier lens or even a flash, it probably dampens some of the shutter shock issues. Those who have reported it with the K-1 seem to think that the DFA 28-105, for some reason, is worse than the other DFA zooms.

03-10-2018, 07:27 PM	#32
alex-virt Forum Member Join Date: Jun 2014 Photos: Albums Posts: 58 Original Poster	Originally posted by ShawnH Is it possibly a lens element vibration issue? I don't think so. It happens with different lenses.

04-27-2018, 08:52 AM	#33
giuseppesavo Senior Member Join Date: May 2011 Posts: 127	Originally posted by alex-virt I recently bought a second K-S1 body with two kit zooms (18-55 and 50-200) and a small AF-200FG flash. Couldn't resist a great offer from the Canadian Ebay. I can confirm that with the flash attached there is no shutter shock at 1/100s. it has the same characteristics of k7 issue. With BG mounted on, the problem is reduced. There will be a sort of resonance frequency giving blur as result.

05-30-2018, 12:45 PM	#34
alex-virt Forum Member Join Date: Jun 2014 Photos: Albums Posts: 58 Original Poster	Update: No shutter shock with the 70mm/F2.4 Limited lens.

05-31-2018, 10:06 AM	#35
ShawnH Forum Member Join Date: May 2017 Posts: 65	It could be that your lens mount on your camera is somehow loose. That would explain why the viberation is lens dependent but not exclusive to one lens.

05-31-2018, 06:32 PM	#36
alex-virt Forum Member Join Date: Jun 2014 Photos: Albums Posts: 58 Original Poster	Originally posted by ShawnH It could be that your lens mount on your camera is somehow loose. That would explain why the viberation is lens dependent but not exclusive to one lens. I have two K-S1s both having similar vibration issues. It's highly unlikely for two cameras to have loose mounts.

Question to Pentax K-S1 owners – shutter vibration

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