K-7 SR assembly rattle

joakimfors · 01-19-2011, 09:08 AM

I'll begin with apologizing for perhaps causing some extra handwringing for the perfectionist crowd here.

I notices that my K-7 had an extra SR assembly noise that I hadn't noticed before when I had it mounted on my tripod today. I'm well aware of the solid clunk that the assembly makes when it moves sideways but this "new" noise is more of a rattle that only occurs when the camera is perfectly level and you gently shake the camera front to back, not side to side. The rattle disappears when exposing* though so I don't believe there should be any problems IQ wise.

I'd just like to know if anyone else's K-7 exhibits the same rattle or if my precious is unique.

*) I did a 15 sec exposure while tapping the body and/or tripod leg and no rattle could be found.

eddie1960 · 01-19-2011, 09:09 AM

Haven't experienced it but SR should be turned off when you use a tripod it can cause blur is my understanding (could be a side effect of it trying to correct something it shouldn't need to) so i never have it turned on when i use a tripod

joakimfors · 01-19-2011, 09:17 AM

Originally posted by eddie1960

Haven't experienced it but SR should be turned off when you use a tripod it can cause blur is my understanding (could be a side effect of it trying to correct something it shouldn't need to) so i never have it turned on when i use a tripod

Yes, SR is turned off (though the SR motors/magnets do activate to hold the sensor still, even when SR is turned off, when exposing). However, the rattle is present even if the camera is turned off completely and both handheld and on tripod. The only criteria is that the camera is absolutely level. If I tilt it forward or backward a bit the rattle disappears.

eddie1960 · 01-19-2011, 09:23 AM

I'll have to check mine out it's at home right now
I'll let you know if i notice anything

**Ex Finn.** · 01-19-2011, 03:35 PM

Tried mine on tripod, quiet as a mouse. Same thing hand held.
Only noise I hear is minor rattle from the lens (DA55-300). Swapped to 16-50 and all is quiet. All this with camera turned off.
Now if I go to live-view, with SR off, then it makes the normal "hissing" sounds.

joakimfors · 01-19-2011, 04:15 PM

OK, thanks for checking. Seems like there is some amount of play somewhere inside mine that is a bit irritating when handling the camera.

01-19-2011, 09:08 AM	#1
joakimfors Senior Member Join Date: Jan 2009 Location: Lund, Sweden Posts: 237	K-7 SR assembly rattle I'll begin with apologizing for perhaps causing some extra handwringing for the perfectionist crowd here. I notices that my K-7 had an extra SR assembly noise that I hadn't noticed before when I had it mounted on my tripod today. I'm well aware of the solid clunk that the assembly makes when it moves sideways but this "new" noise is more of a rattle that only occurs when the camera is perfectly level and you gently shake the camera front to back, not side to side. The rattle disappears when exposing* though so I don't believe there should be any problems IQ wise. I'd just like to know if anyone else's K-7 exhibits the same rattle or if my precious is unique. *) I did a 15 sec exposure while tapping the body and/or tripod leg and no rattle could be found.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FA 50 rattle?	sewebster	Pentax SLR Lens Discussion	11	03-08-2010 03:15 PM
Rattle 50 f1.4	jax_zee	Pentax Camera and Field Accessories	1	08-13-2009 08:57 AM
Slight rattle M 50 1.4	jax_zee	Pentax SLR Lens Discussion	5	08-01-2009 10:41 AM
Does your K-7 rattle?	Nubi	Troubleshooting and Beginner Help	9	07-23-2009 02:47 PM
Yellow Rattle	ToXiQ	Post Your Photos!	3	05-21-2008 07:11 AM

01-19-2011, 09:09 AM	#2
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	Haven't experienced it but SR should be turned off when you use a tripod it can cause blur is my understanding (could be a side effect of it trying to correct something it shouldn't need to) so i never have it turned on when i use a tripod

01-19-2011, 09:17 AM	#3
joakimfors Senior Member Join Date: Jan 2009 Location: Lund, Sweden Posts: 237 Original Poster	Originally posted by eddie1960 Haven't experienced it but SR should be turned off when you use a tripod it can cause blur is my understanding (could be a side effect of it trying to correct something it shouldn't need to) so i never have it turned on when i use a tripod Yes, SR is turned off (though the SR motors/magnets do activate to hold the sensor still, even when SR is turned off, when exposing). However, the rattle is present even if the camera is turned off completely and both handheld and on tripod. The only criteria is that the camera is absolutely level. If I tilt it forward or backward a bit the rattle disappears.

01-19-2011, 09:23 AM	#4
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	I'll have to check mine out it's at home right now I'll let you know if i notice anything

01-19-2011, 03:35 PM	#5
Ex Finn. Site Supporter Join Date: Nov 2007 Location: Southern Maryland. Espoo. Kouvola. Photos: Gallery \| Albums Posts: 7,975	Tried mine on tripod, quiet as a mouse. Same thing hand held. Only noise I hear is minor rattle from the lens (DA55-300). Swapped to 16-50 and all is quiet. All this with camera turned off. Now if I go to live-view, with SR off, then it makes the normal "hissing" sounds.

01-19-2011, 04:15 PM	#6
joakimfors Senior Member Join Date: Jan 2009 Location: Lund, Sweden Posts: 237 Original Poster	OK, thanks for checking. Seems like there is some amount of play somewhere inside mine that is a bit irritating when handling the camera.