Re: Pentax DSLR Shake Reduction Question - Why turn it off on whileon tripod?

[David Savage]

Well I took some firework photos last night & I forgot to turn SR off.
They turned out fine.

I also took this shot after the fireworks, mainly as a long exposure/noise test.

Small (800x536 ~100kb)


Full size (3872x2592 ~1M)


K10D, FA 77mm f1.8 Ltd., F5.6 @ 82 seconds, ISO 100. Sharpened
slightly for web & cloned out some power lines. Focusing was a bit of
a guess, as I could hardly see the trees in the centre of the frame.

It was supposed to be 60 seconds but my "one one thousand, two one
thousand, three..." timing method isn't too accurate much over 20
seconds :-)


Cheers,

Dave

On 1/15/07, Kenneth Waller <[EMAIL PROTECTED]> wrote:
> >We can assume that Pentax knows that the bandwidth doesn't extend into
> > the frequency range of the vibrations caused by mirror/shutter actions
> > or the potentially relatively fast vibrations set up by buffeting
> > winds etc, hence their advisory.
>
> This paper specifically states handheld vibrations.
>
> Kenneth Waller

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Re: Pentax DSLR Shake Reduction Question - Why turn it off on whileon tripod?

[Kenneth Waller]

>We can assume that Pentax knows that the bandwidth doesn't extend into
> the frequency range of the vibrations caused by mirror/shutter actions
> or the potentially relatively fast vibrations set up by buffeting
> winds etc, hence their advisory.

This paper specifically states handheld vibrations.

Kenneth Waller

- Original Message - 
From: "Digital Image Studio" <[EMAIL PROTECTED]>
Subject: Re: Pentax DSLR Shake Reduction Question - Why turn it off on 
whileon tripod?


> On 14/01/07, J. C. O'Connell <[EMAIL PROTECTED]> wrote:
>> Could somebody please explain the theory why
>> the Pentax AS should be turned off while using
>> a tripod??
>>
>> I dont understand how it could hurt,
>> and intutively it seems like It might help
>> if the tripod isnt perfectly stable due to
>> wind, camera mechanism vibrations, etc.
>
> It's speculative since the technical information is limited and no
> users to date have shared any technical test results of the Pentax SR
> systems response and sensitivity. The SR system is based around a set
> of movement detectors (gyroscopic according to link below) and an
> oscillating plate driven by linear motors which carries the sensor.
>
> As you would expect the system will have a limited response bandwidth
> which may be a due to a combination of the speed of the SR processor,
> movement sensors and the moving systems mass vs the motor response. We
> can assume that Pentax knows that the bandwidth doesn't extend into
> the frequency range of the vibrations caused by mirror/shutter actions
> or the potentially relatively fast vibrations set up by buffeting
> winds etc, hence their advisory.
>
> See: 
> http://www.pentaxslr.com/files/scms_docs//PENTAX_SR_Description_091506.pdf
>
> -- 
> Rob Studdert
> HURSTVILLE AUSTRALIA
> Tel +61-2-9554-4110
> UTC(GMT)  +10 Hours
> [EMAIL PROTECTED]
> http://home.swiftdsl.com.au/~distudio//publications/
> Pentax user since 1986, PDMLer since 1998
>
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RE: Pentax DSLR Shake Reduction Question - Why turn it off on whileon tripod?

[J. C. O'Connell]

OK, This is starting to make some sense. If the AS cannot
cover the bandwidth of vibration frequencies fouund on 
a tripod mounted camera, then it would just not work if
turned on. But there must me more to it than that because
if they recommend turning it off, then the sensor is
probably "locked down" or more stable with the AS turned
off even if the vibrations are out of the working
bandwidth of AS system when turned on.

P.S. The comment in the Pentax document about Pentax's
"commitment to the over 24 million PENTAX PK lens legacy"
makes me laugh in light of the fact they dont even bother to
read the f-stop setting on most of them ( K & M series ).
What a joke that is
jco

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Digital Image Studio
Sent: Sunday, January 14, 2007 7:12 AM
To: Pentax-Discuss Mail List
Subject: Re: Pentax DSLR Shake Reduction Question - Why turn it off on
whileon tripod?


On 14/01/07, J. C. O'Connell <[EMAIL PROTECTED]> wrote:
> Could somebody please explain the theory why
> the Pentax AS should be turned off while using
> a tripod??
>
> I dont understand how it could hurt,
> and intutively it seems like It might help
> if the tripod isnt perfectly stable due to
> wind, camera mechanism vibrations, etc.

It's speculative since the technical information is limited and no users
to date have shared any technical test results of the Pentax SR systems
response and sensitivity. The SR system is based around a set of
movement detectors (gyroscopic according to link below) and an
oscillating plate driven by linear motors which carries the sensor.

As you would expect the system will have a limited response bandwidth
which may be a due to a combination of the speed of the SR processor,
movement sensors and the moving systems mass vs the motor response. We
can assume that Pentax knows that the bandwidth doesn't extend into the
frequency range of the vibrations caused by mirror/shutter actions or
the potentially relatively fast vibrations set up by buffeting winds
etc, hence their advisory.

See:
http://www.pentaxslr.com/files/scms_docs//PENTAX_SR_Description_091506.p
df

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UTC(GMT)  +10 Hours
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Re: Pentax DSLR Shake Reduction Question - Why turn it off on while on tripod?

[Digital Image Studio]

On 14/01/07, J. C. O'Connell <[EMAIL PROTECTED]> wrote:
> Could somebody please explain the theory why
> the Pentax AS should be turned off while using
> a tripod??
>
> I dont understand how it could hurt,
> and intutively it seems like It might help
> if the tripod isnt perfectly stable due to
> wind, camera mechanism vibrations, etc.

It's speculative since the technical information is limited and no
users to date have shared any technical test results of the Pentax SR
systems response and sensitivity. The SR system is based around a set
of movement detectors (gyroscopic according to link below) and an
oscillating plate driven by linear motors which carries the sensor.

As you would expect the system will have a limited response bandwidth
which may be a due to a combination of the speed of the SR processor,
movement sensors and the moving systems mass vs the motor response. We
can assume that Pentax knows that the bandwidth doesn't extend into
the frequency range of the vibrations caused by mirror/shutter actions
or the potentially relatively fast vibrations set up by buffeting
winds etc, hence their advisory.

See: http://www.pentaxslr.com/files/scms_docs//PENTAX_SR_Description_091506.pdf

-- 
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Tel +61-2-9554-4110
UTC(GMT)  +10 Hours
[EMAIL PROTECTED]
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Re: K10D Shake Reduction Question

[Kenneth Waller]

> I was taught to put the other hand at the other end of the lens-camera
> combination, to help counterbalance.

Not necessary with a properly set up gimbaled mount. Balance becomes a non 
issue.

But I use my free arm or coat to help damp the lens/camera body combo.

Kenneth Waller

- Original Message - 
From: "Doug Franklin" <[EMAIL PROTECTED]>
Subject: Re: K10D Shake Reduction Question


> Digital Image Studio wrote:
>
>> In that case SR would probably be an advantage, its behavior would be
>> I assume it's also slightly damped?
>
> Even if the mechanism doesn't damp it, the hand on the camera does, and
> I was taught to put the other hand at the other end of the lens-camera
> combination, to help counterbalance.
>
> -- 
> Thanks,
> DougF (KG4LMZ)
>
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Pentax DSLR Shake Reduction Question - Why turn it off on while on tripod?

[J. C. O'Connell]

Could somebody please explain the theory why
the Pentax AS should be turned off while using
a tripod?? 

I dont understand how it could hurt,
and intutively it seems like It might help
if the tripod isnt perfectly stable due to
wind, camera mechanism vibrations, etc.

I am not trying to say that it shouldnt
be turned off for best results on a tripod,
I just would be very curious to know theory
as to why it needs to be turned off if that's 
actually the case?

JCO


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Re: K10D Shake Reduction Question

[Godfrey DiGiorgi]

On Jan 12, 2007, at 3:10 PM, Digital Image Studio wrote:

>> What is the general thought about SR when using a monopod?  I suspect
>> that the movement would be closer to hand held than a tripod, but I
>> have not seen any comments regarding this.
>
> I'd leave it on assuming that the mono-pod is being hand stabilized,
> ie not propped against a fixed object.

My thought too. Of course, experiment and see if it nets any  
advantage or difference is probably the best way to know.

Godfrey


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Re: K10D Shake Reduction Question

[Doug Franklin]

Digital Image Studio wrote:

> In that case SR would probably be an advantage, its behavior would be
> I assume it's also slightly damped?

Even if the mechanism doesn't damp it, the hand on the camera does, and
I was taught to put the other hand at the other end of the lens-camera
combination, to help counterbalance.

-- 
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DougF (KG4LMZ)

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Re: K10D Shake Reduction Question

[William Robb]

- Original Message - 
From: "Kenneth Waller" Subject: Re: K10D Shake Reduction Question


> Thanks for the input Godfrey.
> I was specifically wondering about the SR effects on my K10D with my 600mm
> FA on a gimbaled lens tripod mount.
>
> And if SR would afford me the ability to use slower shutter speeds with
> acceptable results.

If the tripod can be fixed, cable release and mirror lock used, then SR 
isn't going to help, though I don't know if it will hinder either.
The gimball head is really nice in that it is possible to foolw moving 
objects with a longer lens, and I think for that, SR will help, based on my 
limited work with my 600mm.

William Robb 


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Re: K10D Shake Reduction Question

[Christian]

Kenneth Waller wrote:
> I was specifically wondering about the SR effects on my K10D with my 600mm 
> FA on a gimbaled lens tripod mount.

Braggart! :-)

-- 

Christian
http://photography.skofteland.net

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Re: K10D Shake Reduction Question

[Kenneth Waller]

> In that case SR would probably be an advantage, its behavior would be
> nothing like a straight solid tripod mount, I assume it's also
> slightly damped?

I would say so, since the camera is at the end of, essentially, a beam (the 
lens).
Kenneth Waller

- Original Message - 
From: "Digital Image Studio" <[EMAIL PROTECTED]>

Subject: Re: K10D Shake Reduction Question


> On 13/01/07, Kenneth Waller <[EMAIL PROTECTED]> wrote:
>> Thanks for the input Godfrey.
>> I was specifically wondering about the SR effects on my K10D with my 
>> 600mm
>> FA on a gimbaled lens tripod mount.
>>
>> And if SR would afford me the ability to use slower shutter speeds with
>> acceptable results.
>
> In that case SR would probably be an advantage, its behavior would be
> nothing like a straight solid tripod mount, I assume it's also
> slightly damped?
>
> -- 
> Rob Studdert
> HURSTVILLE AUSTRALIA
> Tel +61-2-9554-4110
> UTC(GMT)  +10 Hours
> [EMAIL PROTECTED]
> http://home.swiftdsl.com.au/~distudio//publications/
> Pentax user since 1986, PDMLer since 1998
>
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Re: K10D Shake Reduction Question

[Digital Image Studio]

On 13/01/07, Kenneth Waller <[EMAIL PROTECTED]> wrote:
> Thanks for the input Godfrey.
> I was specifically wondering about the SR effects on my K10D with my 600mm
> FA on a gimbaled lens tripod mount.
>
> And if SR would afford me the ability to use slower shutter speeds with
> acceptable results.

In that case SR would probably be an advantage, its behavior would be
nothing like a straight solid tripod mount, I assume it's also
slightly damped?

-- 
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Tel +61-2-9554-4110
UTC(GMT)  +10 Hours
[EMAIL PROTECTED]
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Re: K10D Shake Reduction Question

[Kenneth Waller]

Thanks for the input Godfrey.
I was specifically wondering about the SR effects on my K10D with my 600mm 
FA on a gimbaled lens tripod mount.

And if SR would afford me the ability to use slower shutter speeds with 
acceptable results.

Kenneth Waller

- Original Message - 
From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]>
Subject: Re: K10D Shake Reduction Question


>
> On Jan 12, 2007, at 12:47 PM, Kenneth Waller wrote:
>
>> I know the manual says not to use SR when the camera is tripod
>> mounted. No
>> reason given.
>>
>> Anyone know the reason why?
>> Potential damage? Or ineffective SR?
>>
>> What about with the attached lens mounted on a tripod?
>> I'm thinking there still are shake issues with the lens tripod
>> mounted,
>> especially longer lenses.
>
> I'm sure I sent a response on this before but can't find it ...
>
> Shake Reduction is tuned to the camera movement that results at the
> frequency and amplitudes of human musculature. Fit the camera/lens
> assembly to a tripod or other more rigid support and the expected
> shake frequency and amplitudes are drastically different, so the SR
> is most likely unable to afford any real advantage in stabilization
> and might actually add movement at the sensor due to jitter from the
> different frequency/amplitude range.
>
> Other cameras I've owned with IS have also recommended disabling it
> when on a tripod. Aside from the above, and depending upon the
> specific camera, it could also save a little bit of power. I've
> forgotten in the past and left it enabled, never saw anything get
> damaged nor any obvious negative effects on the IQ.
>
> But if you're using a sturdy support anyway, might as well just turn
> it off.
>
> Godfrey
>
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Re: K10D Shake Reduction Question

[Digital Image Studio]

On 13/01/07, Perry Pellechia <[EMAIL PROTECTED]> wrote:
>
> What is the general thought about SR when using a monopod?  I suspect
> that the movement would be closer to hand held than a tripod, but I
> have not seen any comments regarding this.

I'd leave it on assuming that the mono-pod is being hand stabilized,
ie not propped against a fixed object.

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Tel +61-2-9554-4110
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Re: K10D Shake Reduction Question

[Perry Pellechia]

On 1/12/07, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote:
>
> On Jan 12, 2007, at 12:47 PM, Kenneth Waller wrote:
>
> > I know the manual says not to use SR when the camera is tripod
> > mounted. No
> > reason given.
> >
> > Anyone know the reason why?
> > Potential damage? Or ineffective SR?
> >
> > What about with the attached lens mounted on a tripod?
> > I'm thinking there still are shake issues with the lens tripod
> > mounted,
> > especially longer lenses.
>
> I'm sure I sent a response on this before but can't find it ...
>
> Shake Reduction is tuned to the camera movement that results at the
> frequency and amplitudes of human musculature. Fit the camera/lens
> assembly to a tripod or other more rigid support and the expected
> shake frequency and amplitudes are drastically different, so the SR
> is most likely unable to afford any real advantage in stabilization
> and might actually add movement at the sensor due to jitter from the
> different frequency/amplitude range.
>
> Other cameras I've owned with IS have also recommended disabling it
> when on a tripod. Aside from the above, and depending upon the
> specific camera, it could also save a little bit of power. I've
> forgotten in the past and left it enabled, never saw anything get
> damaged nor any obvious negative effects on the IQ.
>
> But if you're using a sturdy support anyway, might as well just turn
> it off.

What is the general thought about SR when using a monopod?  I suspect
that the movement would be closer to hand held than a tripod, but I
have not seen any comments regarding this.

-- 
<>
Perry Pellechia

Primary email: [EMAIL PROTECTED]
Alternate email: [EMAIL PROTECTED]
Home Page: http://homer.chem.sc.edu/perry
<>

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Re: K10D Shake Reduction Question

[Godfrey DiGiorgi]

On Jan 12, 2007, at 12:47 PM, Kenneth Waller wrote:

> I know the manual says not to use SR when the camera is tripod  
> mounted. No
> reason given.
>
> Anyone know the reason why?
> Potential damage? Or ineffective SR?
>
> What about with the attached lens mounted on a tripod?
> I'm thinking there still are shake issues with the lens tripod  
> mounted,
> especially longer lenses.

I'm sure I sent a response on this before but can't find it ...

Shake Reduction is tuned to the camera movement that results at the  
frequency and amplitudes of human musculature. Fit the camera/lens  
assembly to a tripod or other more rigid support and the expected  
shake frequency and amplitudes are drastically different, so the SR  
is most likely unable to afford any real advantage in stabilization  
and might actually add movement at the sensor due to jitter from the  
different frequency/amplitude range.

Other cameras I've owned with IS have also recommended disabling it  
when on a tripod. Aside from the above, and depending upon the  
specific camera, it could also save a little bit of power. I've  
forgotten in the past and left it enabled, never saw anything get  
damaged nor any obvious negative effects on the IQ.

But if you're using a sturdy support anyway, might as well just turn  
it off.

Godfrey

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Re: K10D Shake Reduction Question

[pnstenquist]

I accidentally used SR for some shots off a tripod the other day. They didn't 
seem to differ from those shots that I took with it off.
Paul
 -- Original message --
From: "Kenneth Waller" <[EMAIL PROTECTED]>
> I know the manual says not to use SR when the camera is tripod mounted. No 
> reason given.
> 
> Anyone know the reason why?
> Potential damage? Or ineffective SR?
> 
> What about with the attached lens mounted on a tripod?
> I'm thinking there still are shake issues with the lens tripod mounted, 
> especially longer lenses.
> 
> Kenneth Waller 
> 
> 
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K10D Shake Reduction Question

[Kenneth Waller]

I know the manual says not to use SR when the camera is tripod mounted. No 
reason given.

Anyone know the reason why?
Potential damage? Or ineffective SR?

What about with the attached lens mounted on a tripod?
I'm thinking there still are shake issues with the lens tripod mounted, 
especially longer lenses.

Kenneth Waller 


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Re: Shake Reduction Question

[David Savage]

On 10/22/06, Digital Image Studio <[EMAIL PROTECTED]> wrote:
> On 21/10/06, David Savage <[EMAIL PROTECTED]> wrote:
>
> > So basically the sensor is always "floating" and only shifts when SR
> > is activated. Which is how I thought it might work when the battery
> > life data was mentioned a few months ago.
>
> >From what I can gather, there's no way to fix the floating assembly
> other than to activate the motors.

As I thought.

Dave

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Re: Shake Reduction Question

[Digital Image Studio]

On 21/10/06, Lawrence Kwan <[EMAIL PROTECTED]> wrote:

> >From what JohnCPentax has described (not sure if I understand him
> correctly), the CCD only moves into position after the shutter release is
> pressed, and *during* the time when the mirror flips up.  But it can move
> so quickly that it would be in position well before the mirror stops at
> the up position.

I doubt it very much, that wouldn't do much for camera stability.

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Re: Shake Reduction Question

[Digital Image Studio]

On 21/10/06, David Savage <[EMAIL PROTECTED]> wrote:

> So basically the sensor is always "floating" and only shifts when SR
> is activated. Which is how I thought it might work when the battery
> life data was mentioned a few months ago.

>From what I can gather, there's no way to fix the floating assembly
other than to activate the motors.

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Re: Shake Reduction Question

[David Savage]

On 10/22/06, David Mann <[EMAIL PROTECTED]> wrote:
> On Oct 21, 2006, at 5:34 AM, David Savage wrote:
>
> > I reckon if the camera was struck by lightening the SR system would go
> > nut's and shoot the sensor out the side of the camera. But then again
> > it might just melt.
>
> If your camera were struck by lightning I don't think the state of
> the SR system would be the first thing on your mind... if indeed you
> still had a mind!

:-)

Dave

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Re: Shake Reduction Question

[David Mann]

On Oct 21, 2006, at 5:34 AM, David Savage wrote:

> I reckon if the camera was struck by lightening the SR system would go
> nut's and shoot the sensor out the side of the camera. But then again
> it might just melt.

If your camera were struck by lightning I don't think the state of  
the SR system would be the first thing on your mind... if indeed you  
still had a mind!

- Dave



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Re: Shake Reduction Question

[David Savage]

On 10/21/06, Lawrence Kwan <[EMAIL PROTECTED]> wrote:
> On Sat, 21 Oct 2006, David Savage wrote:
> > Any moving part can break. What I'd like to know is how the sensor is
> > fixed in position when SR isn't in use.
>
> The sensor is not fixed, it can be moved around by shaking the camera.
> Apparently, Pentax engineers have tested this exhaustively, and there is
> no ill effect from the loose CCD.
>
> >From what JohnCPentax has described (not sure if I understand him
> correctly), the CCD only moves into position after the shutter release is
> pressed, and *during* the time when the mirror flips up.  But it can move
> so quickly that it would be in position well before the mirror stops at
> the up position.

So basically the sensor is always "floating" and only shifts when SR
is activated. Which is how I thought it might work when the battery
life data was mentioned a few months ago.

Dave

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Re: Shake Reduction Question

[Lawrence Kwan]

On Sat, 21 Oct 2006, David Savage wrote:
> Any moving part can break. What I'd like to know is how the sensor is
> fixed in position when SR isn't in use.

The sensor is not fixed, it can be moved around by shaking the camera. 
Apparently, Pentax engineers have tested this exhaustively, and there is 
no ill effect from the loose CCD.

>From what JohnCPentax has described (not sure if I understand him 
correctly), the CCD only moves into position after the shutter release is 
pressed, and *during* the time when the mirror flips up.  But it can move 
so quickly that it would be in position well before the mirror stops at 
the up position.


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Re: Shake Reduction Question

[Digital Image Studio]

On 21/10/06, Shel Belinkoff <[EMAIL PROTECTED]> wrote:
> Always dubious of new technology, I was wondering about what could possibly
> go wrong with the Pentax SR system.  What are the potential mechanical
> pitfalls?  Also, based on what's known thus far, if SR "breaks," would the
> camera still be functional?

My guess is no, when SR is turned off the electromagnets that are the
motive force for the SR are fed a fixed current which holds the
assembly firm (a bit like magnetic door latches). So if the logic
fails the motors could shift the sensor to an inappropriate rest
position and that or worse may happen if the drive electronics for the
SR motor coils fail.

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Re: Shake Reduction Question

[P. J. Alling]

It would all depend on how it broke.  It's an electro mechanical system, 
having a bit in common with lots of different things.  But in many ways 
it's entirely new technology.  It's hard to know how robust it's likely 
to be.

Shel Belinkoff wrote:

>Always dubious of new technology, I was wondering about what could possibly
>go wrong with the Pentax SR system.  What are the potential mechanical
>pitfalls?  Also, based on what's known thus far, if SR "breaks," would the
>camera still be functional?
>
>
>Shel
>
>
>
>
>  
>


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Re: Shake Reduction Question

[Alexandru-Cristian Sarbu]

On 10/20/06, John Celio <[EMAIL PROTECTED]> wrote:
>
> Sorta like aperture simulators.  ;-D
>
> John Celio
>

What is an aperture simulator? Does my *istDS have one? ;-)

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Re: Shake Reduction Question

[John Celio]

> Always dubious of new technology, I was wondering about what could 
> possibly
> go wrong with the Pentax SR system.  What are the potential mechanical
> pitfalls?  Also, based on what's known thus far, if SR "breaks," would the
> camera still be functional?

That's hard to say right now.  I know that when the KonicaMinolta Anti-Shake 
system first came out, we sold a ton of them but occassionally got one or 
two back due to AS problems.  The sensor-shifting motors would start having 
seizures and never stop vibrating.  While I'm sure this was great for 
getting dust off the sensor, it never allowed the user to take a photo.  The 
problem was rare, at least.

Tangent: I always thought it would have been much more fun to sell 
KonicaMinolta bodies if they'd called it their "Anti-Shake System."  Plus, 
now I could tell customers that Pentax's SR kicks ASS.  ;-)

Anyway!  I don't think you have nearly as much to worry about with Pentax's 
SR as with AS (or whatever Sony is calling it now).  SR has no moving parts 
aside from the sensor platform, whereas AS had motors and tracks and gears 
and all sorts of other little things that could go wrong.

Sorta like aperture simulators.  ;-D

John Celio

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Re: Shake Reduction Question

[Godfrey DiGiorgi]

LOL ... If any camera is struck by lightning, I would expect it to be  
broken unless supernatural acts are operating at the time. Digital  
cameras would require miracles. ];-)

If the SR system failed and nothing else ...  in the Pentax  
implementation the sensor 'floats' on an electromagnetic positioning  
field. I suspect the camera would likely respond by recording images  
with the sensor in whatever position it ended up being jammed into.  
This might or might not mean a small focus shift (I don't know what  
the fore-aft clearances for the sensor assembly are) and/or a certain  
amount of framing registration error from the viewfinder screen since  
it can move up to about 5mm off the center point in H and V directions.

However, since the SR system has no moving parts other than the  
sensor assembly itself, I suspect that a failure here would indicate  
a larger electrical or software failure in the body which means that  
the body would possibly be unable to function at all.

Godfery


On Oct 20, 2006, at 9:34 AM, David Savage wrote:

> Any moving part can break. What I'd like to know is how the sensor is
> fixed in position when SR isn't in use.
>
> I reckon if the camera was struck by lightning the SR system would go
> nut's and shoot the sensor out the side of the camera. But then again
> it might just melt.
>
> Dave
>
> On 10/21/06, Shel Belinkoff <[EMAIL PROTECTED]> wrote:
>> Always dubious of new technology, I was wondering about what could  
>> possibly
>> go wrong with the Pentax SR system.  What are the potential  
>> mechanical
>> pitfalls?  Also, based on what's known thus far, if SR "breaks,"  
>> would the
>> camera still be functional?


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Re: Shake Reduction Question

[David Savage]

Any moving part can break. What I'd like to know is how the sensor is
fixed in position when SR isn't in use.

I reckon if the camera was struck by lightening the SR system would go
nut's and shoot the sensor out the side of the camera. But then again
it might just melt.

Dave

On 10/21/06, Shel Belinkoff <[EMAIL PROTECTED]> wrote:
> Always dubious of new technology, I was wondering about what could possibly
> go wrong with the Pentax SR system.  What are the potential mechanical
> pitfalls?  Also, based on what's known thus far, if SR "breaks," would the
> camera still be functional?
>
>
> Shel

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Shake Reduction Question

[Shel Belinkoff]

Always dubious of new technology, I was wondering about what could possibly
go wrong with the Pentax SR system.  What are the potential mechanical
pitfalls?  Also, based on what's known thus far, if SR "breaks," would the
camera still be functional?


Shel




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