Pentax SR effective when panning!

falconeye · 03-23-2008, 07:00 AM

I just learned from my German forum that the Pentax SR anti-shake operates in two modes:

- normal (as we all know)
- vertical only (when a horizontal pan is auto-detected)

This is undocumented, even in contradiction to the manual!

It actually even has a third feature:

- shutter release compensation (a counter-rotation!) right after the release.

(this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...)

So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation.

The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline!

So, if anybody owns a copy of this white paper...

Peter Zack · 03-23-2008, 07:02 AM

I'd like to see that as well. it's counter to all that has been posted on the subject. I'll have to give it a try as I always shut it off for this type of shooting.

blwnhr · 03-23-2008, 07:20 AM

Originally posted by falconeye

The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline!

Hmmm, could that be because it wasn't effective? Perhaps it is because people will expect it to work in every circumstance. I've left it on by accident a few times whilst panning and every time had undesirable results. Perhaps this could be because I like to hold the camera at an angle whilst panning and the SR freaks out?

SupremeMoFo · 03-23-2008, 07:23 AM

I've left it on while panning (with a monopod attached to lens) and haven't had any issue with it.

falconeye · 03-23-2008, 11:20 AM

Originally posted by blwnhr

I've left it on by accident a few times whilst panning and every time had undesirable results.

My German forum fellows said that after learning about this they tested and found it effective. Of course, your pan must be strict horizontal then... Maybe, it needs some practice. I'll have a look at it myself soon.

Let me store the source reference for my books here: DSLR-Forum - Einzelnen Beitrag anzeigen - K20D - (k)ein Vergleich

distudio · 03-23-2008, 01:43 PM

Originally posted by falconeye

I just learned from my German forum that the Pentax SR anti-shake operates in two modes:

- normal (as we all know)
- vertical only (when a horizontal pan is auto-detected)

This is undocumented, even in contradiction to the manual!

It actually even has a third feature:

- shutter release compensation (a counter-rotation!) right after the release.

(this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...)

So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation.

The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline!

So, if anybody owns a copy of this white paper...

Horizontal panning has been proven to work quite easily in various other forums but the "shutter release compensation" I don't believe exists in the SR enabled bodies. I've never seen it discussed either on a forum, in a white paper or in a patent application (and I have a decent library of Pentax WPs and patent information).

falconeye · 03-23-2008, 06:07 PM

Originally posted by distudio

the "shutter release compensation" I don't believe exists in the SR enabled bodies. I've never seen it discussed either on a forum, in a white paper or in a patent application (and I have a decent library of Pentax WPs and patent information).

Well, we have already agreed in another thread that the gyro sensors wouldn't be able to measure the rotational speed.

My German forum fellow claimed this: "It was a footnote in some Pentax whitepaper and it does work, indeed. [Das stand mal in irgendeinem Whitepaper von Pentax als Randnotiz und es funktioniert tatsächlich.]"

So, shall we believe it? I don't know.

Technically, it would be feasible (in the lab, measure some response functions from shutter releases and tune the SR to heuristically guess one from measured y acceleration at the moment of release).

RiceHigh · 03-23-2008, 08:42 PM

I can confirm that when I used my K100D on monopod, the SR did work, which is I am sure about.

Originally posted by falconeye

I just learned from my German forum that the Pentax SR anti-shake operates in two modes:

- normal (as we all know)
- vertical only (when a horizontal pan is auto-detected)

This is undocumented, even in contradiction to the manual!

It actually even has a third feature:

- shutter release compensation (a counter-rotation!) right after the release.

(this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...)

So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation.

The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline!

So, if anybody owns a copy of this white paper...

Tom M · 03-24-2008, 10:08 AM

Originally posted by RiceHigh

I can confirm that when I used my K100D on monopod, the SR did work, which is I am sure about.

Hey RiceHigh, I'd like to remind you of something..

"All the information contained in this website are for reference only and merely. The author has no responsibility of any kind on the accuracy or whatsoever on all the information and data provided here. In addition, it should be noted that all the data results were obtained under particular test conditions and with particular equipment units each of which is of an unique serial number issued by the manufacturer. It is therefore there is no absolute accuracy nor genuine generality of any kind is implied.

In case you're wondering, it's the disclaimer on your wrebsite.. The Disclaimer

You can confirm it but, your confirmation may not be accurate or truthful and you want no responsibilities related to the information you provide. Good to know

Tom M · 03-25-2008, 07:37 AM

Wow - that worked remarkably well

Like an OFF switch for BS'ing or something..

Peter Zack · 03-25-2008, 10:17 AM

Cut and paste that one Tom. Brilliant.

Jodokast96 · 03-25-2008, 03:06 PM

Damn, I'm missing that "Thumbs Up" button over here Tom!

**Canada_Rockies** · 03-26-2008, 09:32 AM

Originally posted by Tom M

Wow - that worked remarkably well

Like an OFF switch for BS'ing or something..

I use the forum BS off switch. I have set RH to be ignored. I don't see his posts. I don't see his threads. I am happy with my decision.

03-23-2008, 07:00 AM	#1
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871	Pentax SR effective when panning! I just learned from my German forum that the Pentax SR anti-shake operates in two modes: - normal (as we all know) - vertical only (when a horizontal pan is auto-detected) This is undocumented, even in contradiction to the manual! It actually even has a third feature: - shutter release compensation (a counter-rotation!) right after the release. (this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...) So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation. The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline! So, if anybody owns a copy of this white paper...

03-23-2008, 11:20 AM	#5
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871 Original Poster	Originally posted by blwnhr I've left it on by accident a few times whilst panning and every time had undesirable results. My German forum fellows said that after learning about this they tested and found it effective. Of course, your pan must be strict horizontal then... Maybe, it needs some practice. I'll have a look at it myself soon. Let me store the source reference for my books here: DSLR-Forum - Einzelnen Beitrag anzeigen - K20D - (k)ein Vergleich Last edited by falconeye; 03-23-2008 at 11:28 AM. Reason: added source link

03-23-2008, 08:42 PM	#8
RiceHigh Veteran Member Join Date: Nov 2006 Location: Hong Kong Posts: 1,934	It works on monopod too. I can confirm that when I used my K100D on monopod, the SR did work, which is I am sure about. Originally posted by falconeye I just learned from my German forum that the Pentax SR anti-shake operates in two modes: - normal (as we all know) - vertical only (when a horizontal pan is auto-detected) This is undocumented, even in contradiction to the manual! It actually even has a third feature: - shutter release compensation (a counter-rotation!) right after the release. (this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...) So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation. The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline! So, if anybody owns a copy of this white paper...

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03-23-2008, 07:02 AM	#2
Peter Zack Pentaxian Moderator Emeritus Join Date: May 2007 Location: Edmonton Alberta, Canada Photos: Gallery \| Albums Posts: 10,643	I'd like to see that as well. it's counter to all that has been posted on the subject. I'll have to give it a try as I always shut it off for this type of shooting.

03-23-2008, 07:20 AM	#3
blwnhr Veteran Member Join Date: May 2007 Location: Tasmania, Australia Photos: Gallery Posts: 663	Originally posted by falconeye The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline! Hmmm, could that be because it wasn't effective? Perhaps it is because people will expect it to work in every circumstance. I've left it on by accident a few times whilst panning and every time had undesirable results. Perhaps this could be because I like to hold the camera at an angle whilst panning and the SR freaks out?

03-23-2008, 07:23 AM	#4
SupremeMoFo Veteran Member Join Date: Mar 2007 Location: Queensland, Australia Posts: 668	I've left it on while panning (with a monopod attached to lens) and haven't had any issue with it.

03-23-2008, 01:43 PM	#6
distudio Veteran Member Join Date: Jul 2007 Location: Sydney Photos: Albums Posts: 450	Originally posted by falconeye I just learned from my German forum that the Pentax SR anti-shake operates in two modes: - normal (as we all know) - vertical only (when a horizontal pan is auto-detected) This is undocumented, even in contradiction to the manual! It actually even has a third feature: - shutter release compensation (a counter-rotation!) right after the release. (this must be the mystical rotation the SR is said to be able of while the gyro-sensors aren't...) So, while the Pentax SR has no switch for pan mode, it still has it and no other system features shutter release compensation. The source is a white paper from Pentax which isn't online anymore. Not only they don't advertise this stuff, they even take the white paper offline! So, if anybody owns a copy of this white paper... Horizontal panning has been proven to work quite easily in various other forums but the "shutter release compensation" I don't believe exists in the SR enabled bodies. I've never seen it discussed either on a forum, in a white paper or in a patent application (and I have a decent library of Pentax WPs and patent information).

03-23-2008, 06:07 PM	#7
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871 Original Poster	Originally posted by distudio the "shutter release compensation" I don't believe exists in the SR enabled bodies. I've never seen it discussed either on a forum, in a white paper or in a patent application (and I have a decent library of Pentax WPs and patent information). Well, we have already agreed in another thread that the gyro sensors wouldn't be able to measure the rotational speed. My German forum fellow claimed this: "It was a footnote in some Pentax whitepaper and it does work, indeed. [Das stand mal in irgendeinem Whitepaper von Pentax als Randnotiz und es funktioniert tatsächlich.]" So, shall we believe it? I don't know. Technically, it would be feasible (in the lab, measure some response functions from shutter releases and tune the SR to heuristically guess one from measured y acceleration at the moment of release).

03-24-2008, 10:08 AM	#9
Tom M Veteran Member Join Date: Aug 2007 Location: Lincoln Park, NJ Photos: Gallery Posts: 780	Originally posted by RiceHigh I can confirm that when I used my K100D on monopod, the SR did work, which is I am sure about. Hey RiceHigh, I'd like to remind you of something.. "All the information contained in this website are for reference only and merely. The author has no responsibility of any kind on the accuracy or whatsoever on all the information and data provided here. In addition, it should be noted that all the data results were obtained under particular test conditions and with particular equipment units each of which is of an unique serial number issued by the manufacturer. It is therefore there is no absolute accuracy nor genuine generality of any kind is implied. In case you're wondering, it's the disclaimer on your wrebsite.. The Disclaimer You can confirm it but, your confirmation may not be accurate or truthful and you want no responsibilities related to the information you provide. Good to know

03-25-2008, 07:37 AM	#10
Tom M Veteran Member Join Date: Aug 2007 Location: Lincoln Park, NJ Photos: Gallery Posts: 780	Wow - that worked remarkably well Like an OFF switch for BS'ing or something..

03-25-2008, 10:17 AM	#11
Peter Zack Pentaxian Moderator Emeritus Join Date: May 2007 Location: Edmonton Alberta, Canada Photos: Gallery \| Albums Posts: 10,643	Cut and paste that one Tom. Brilliant.

03-25-2008, 03:06 PM	#12
Jodokast96 Veteran Member Join Date: Oct 2007 Location: Erial, NJ USA Photos: Gallery \| Albums Posts: 2,134	Damn, I'm missing that "Thumbs Up" button over here Tom!

03-26-2008, 09:32 AM	#13
Canada_Rockies Loyal Site Supporter Join Date: Nov 2007 Location: Sparwood, BC, Canada Photos: Gallery \| Albums Posts: 12,385	Originally posted by Tom M Wow - that worked remarkably well Like an OFF switch for BS'ing or something.. I use the forum BS off switch. I have set RH to be ignored. I don't see his posts. I don't see his threads. I am happy with my decision.