Faulty?


pentaxstudio

Link Posted 09/07/2010 - 10:33
Hi,

If i turn my pentax k10d to the side to take a portrait shot something moves inside a little. You can feel a little thud inside. Is this normal?

Matt

Clarky

Link Posted 09/07/2010 - 11:04
Perfectly normal, its the shake reduction mechanism I believe.
Camera:|K-7|
Pentax Lenses:|DA12-24/f4 ED AL|DA35Ltd Macro|FA31Ltd|FA77Ltd|FA50/1.4|F70-210|FA20-35 f4/AL|A*200/f4 Macro ED|A50/1.7|A50 Macro f2.8|1.7xAF adapter|
Voigtlander|125/f2.5SL Macro APO Lanthar|
Sigma Lenses:|EX DG 100-300 f4|2X & 1.4X TC|
Flashes:|AF540FGZx2|RingFlash AF160FC|

walkeja

Link Posted 09/07/2010 - 11:19
I've never heard this on mine, but I am a little deaf.
Pentax K1-ii and MZ6
Pentax Lenses 28-80 F, 300 DA*, 80-200 F, 35 F2.4 AL, M50 F1.7, 28-105 DFA, 20 F4 SMC
ONE UNITED Member

hefty1

Link Posted 09/07/2010 - 11:23
As Clarky says it's quite normal, you're not the first to ask though...
Joining the Q

JForeigner

Link Posted 09/07/2010 - 11:29
Mine does the same. I always put it down to the battery moving.

G
Armed with a K3, some M, A, FA, DA, and star lens. With an eye open for "just one more lens".

My PPG link

thoughton

Link Posted 09/07/2010 - 11:43
I always thought it was some kind of weight on a rod which detects if the image was taken portrait or landscape orientation? The sensor wouldn't make such a loud clunk would it?
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27”, Macbook Pro 17”, iPad, iPhone 3G
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Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!

hefty1

Link Posted 09/07/2010 - 11:50
It is the SR mechanism. The sensor isn't restrained from moving until the moment of capture when it is held in place (or moved to compensate for shake) by electromagnets around its perimeter. At other times it's free to move around and make thudding noises.

Pentax missed a trick by not mentioning this in the manual, new owners worried by the thud is probably one of the most frequently covered topics on these boards.
Joining the Q

hefty1

Link Posted 09/07/2010 - 11:52
thoughton wrote:
I always thought it was some kind of weight on a rod which detects if the image was taken portrait or landscape orientation? The sensor wouldn't make such a loud clunk would it?

It's not "just" the sensor though, it's also the housing that it sits in.
Joining the Q

thoughton

Link Posted 09/07/2010 - 12:39
Ah I see, thanks Hefty.
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27”, Macbook Pro 17”, iPad, iPhone 3G
Flickr • Fluidr • PPG • Street • Portfolio site
Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!

gartmore

Link Posted 09/07/2010 - 13:10
walkeja wrote:
I've never heard this on mine, but I am a little deaf.

Perhaps you don't have 'sensor clean at start up' turned on because you should feel it vibrate quite a bit.
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

terje-l

Link Posted 12/07/2010 - 17:46
hefty1 wrote:
Pentax missed a trick by not mentioning this in the manual, new owners worried by the thud is probably one of the most frequently covered topics on these boards.

But it is mentioned:

K20D manual quote:

The camera may generate some operating noise when it is shaken, such
as when changing the composition
of a picture. It is not a malfunction.

unquote
Best regards
Terry

K20D, Optio I10, DA 18-55 1:3.5-5.6 AL II, A 1:1.7/50, D FA 1:2.8/100 Macro, Sigma 70-300 1:4-5.6 APO DG Macro, Pentax AF 360FGZ

Oggy

Link Posted 12/07/2010 - 21:13
gartmore wrote:
walkeja wrote:
I've never heard this on mine, but I am a little deaf.

Perhaps you don't have 'sensor clean at start up' turned on because you should feel it vibrate quite a bit.

Ken - are we talking the small amount of slack in the SR system when it's not powered or the self clean function.

I have to say I have not heard the clunk on mine and I am certainly not going to shake it hard so I can.

Mike-P

Link Posted 12/07/2010 - 21:18
I hear and feel the SR all the time on the K-7 when carrying it around.

No Clunk on startup anymore though ... I miss that.
. My Flickr

womble

Link Posted 12/07/2010 - 21:27
terje-l wrote:
hefty1 wrote:
Pentax missed a trick by not mentioning this in the manual, new owners worried by the thud is probably one of the most frequently covered topics on these boards.

But it is mentioned:

K20D manual quote:

The camera may generate some operating noise when it is shaken, such
as when changing the composition
of a picture. It is not a malfunction.

unquote

I never read the K20D manual...
Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.

My website

Mongoose

Link Posted 13/07/2010 - 12:37
womble wrote:
terje-l wrote:
Quote:
Pentax missed a trick by not mentioning this in the manual, new owners worried by the thud is probably one of the most frequently covered topics on these boards.

But it is mentioned:

K20D manual quote:

The camera may generate some operating noise when it is shaken, such
as when changing the composition
of a picture. It is not a malfunction.

unquote

I never read the K20D manual...

what on earth did you do while waiting for the battery to charge the first time?

that's what manuals are for isn't it?
you don't have to be mad to post here



but it does help
Last Edited by Mongoose on 13/07/2010 - 12:37
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