Built in shake reduction. Does this really works?
Posted 20/07/2011 - 15:04
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It should be the same as the canon IS lenses, where there are the two settings, one for panning and the other to correct everything.
I also think SR works very, very well, also up to 200-300mm, but then the monopod becomes necessary.
Bret
I also think SR works very, very well, also up to 200-300mm, but then the monopod becomes necessary.
Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
Posted 20/07/2011 - 15:48
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So out of the two systems employed by pentax and nikon to stabalize the camera does one work better than the other. A freind of mine has nikon kit but i think he pays more for his lenses with vr than the pentax version of the same lens.
Regards Ian
Regards Ian
Posted 20/07/2011 - 17:52
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Mike-P wrote:
But then I rather like the look of the Pentax Q as well so what do I know.
There's only one answer to that dilemma Mike, and I think you know it already.
Mannesty wrote:
With a K5 armed with a GPS unit, it'll even track the stars for up to 300 seconds. That's got to mean that, if the stabilisation is digital, it uses very fine stepping increments. I think however it probably uses an analogue sensor positioning system, which is stepless.
For some reason I am strangely drawn to the GPS unit ....With a K5 armed with a GPS unit, it'll even track the stars for up to 300 seconds. That's got to mean that, if the stabilisation is digital, it uses very fine stepping increments. I think however it probably uses an analogue sensor positioning system, which is stepless.
But then I rather like the look of the Pentax Q as well so what do I know.
Peter E Smith - flickr Photostream
Posted 20/07/2011 - 17:55
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Blythman wrote:
Your understanding is correct. At least, that's my understanding if I've understood the manual correctly. vrapan wrote:
Wonder what setting number 2 is for on the Sigma 150-500 then? I thought it corrected vertically, but not horizontally so that when panning it didn't try to compensate for the horizontal movement of the camera and lens. Further info would be good to correct my misunderstanding. Blythman wrote:
You don't say what you are photographing. Is it static or moving subjects? I'd suspect the Pentax SR isn't as good for moving subjects. Peter refers to the Sigma 150-500, well that lens has 2 settings built in. One for static and one for panning. The Penax bodies don't have this.
SR or any image stabilisation system is no good at all for moving subjects, fast shutter speed is the solution to that problem.You don't say what you are photographing. Is it static or moving subjects? I'd suspect the Pentax SR isn't as good for moving subjects. Peter refers to the Sigma 150-500, well that lens has 2 settings built in. One for static and one for panning. The Penax bodies don't have this.
OS option 2 on the 150-500mm allows for vertical stabilisation only.
Peter E Smith - flickr Photostream
Posted 20/07/2011 - 20:19
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built in sr is very good, and has its advantages of being used on all lenses, in lenses you can see it working and alot more so on bigger lenses (400mm up) and each lens can be differently tuned to get bettter results at certain focal lenghts, my husband finds his sigma os lenses better than his nikon vr lenses.
Posted 20/07/2011 - 20:58
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vrapan wrote:
SR or any image stabilisation system is no good at all for moving subjects, fast shutter speed is the solution to that problem.
In many cases too fast a shutter speed completely ruins shots of moving objects.SR or any image stabilisation system is no good at all for moving subjects, fast shutter speed is the solution to that problem.
I've taken shots of race cars where they look like they've been parked n the circuit, and planes/helicopters where the propeller is stopped. Getting the shot right, involves leaving enough motion blur, in wheels, propellers etc. to give the impression of speed.
Whilst not ideal, I've found Pentax's SR generally improves my (handheld) panning shots, as it copes reasonably well keeping long smooth movements, whilst minimizing of axis shakes.
Mike
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Pentax:K5ii, K7, K100D, DA18-55, DA10-17, DA55-300, DA50-200, F100-300, F50, DA35 AL, 4* M50, 2* M135, Helicoid extension, Tak 300 f4 (& 6 film bodies)
3rd Party: Bigmos (Sigma 150-500mm OS HSM),2* 28mm, 100mm macro, 28-200 zoom, 35-80 zoom, 80-200 zoom, 80-210 zoom, 300mm M42, 600 mirror, 1000-4000 scope, 50mm M42, enlarger lenses, Sony & micro 4/3 cameras with various PK mounts, Zenit E...
Far to many tele-converters, adapters, project parts & extension tubes etc.
.[size=11:].Flickr• WPF• Panoramio
.
Pentax:K5ii, K7, K100D, DA18-55, DA10-17, DA55-300, DA50-200, F100-300, F50, DA35 AL, 4* M50, 2* M135, Helicoid extension, Tak 300 f4 (& 6 film bodies)
3rd Party: Bigmos (Sigma 150-500mm OS HSM),2* 28mm, 100mm macro, 28-200 zoom, 35-80 zoom, 80-200 zoom, 80-210 zoom, 300mm M42, 600 mirror, 1000-4000 scope, 50mm M42, enlarger lenses, Sony & micro 4/3 cameras with various PK mounts, Zenit E...
Far to many tele-converters, adapters, project parts & extension tubes etc.
.[size=11:].Flickr• WPF• Panoramio
Posted 20/07/2011 - 21:32
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BillM wrote:
Yep although you could use it on a monopod though.wvbarnes wrote:
Do not use shake reduction if using a tripod, monopod or resting on say a wall
Bill, might I ask a daft question....why would you not still use SR if using a tripod etc? Do you mean actually turn it off?Do not use shake reduction if using a tripod, monopod or resting on say a wall
The problem is that if the movement is below the threshold of the SR system there might be the possibility that a feedback loop will be created inside the SR system so it might actually move the sensor while the camera is completely still.
Stefan
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Posted 20/07/2011 - 23:46
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Anvh wrote:
The problem is that if the movement is below the threshold of the SR system there might be the possibility that a feedback loop will be created inside the SR system so it might actually move the sensor while the camera is completely still.
I don't understand a word of that BillM wrote:
Yep although you could use it on a monopod though.wvbarnes wrote:
Do not use shake reduction if using a tripod, monopod or resting on say a wall
Bill, might I ask a daft question....why would you not still use SR if using a tripod etc? Do you mean actually turn it off?Do not use shake reduction if using a tripod, monopod or resting on say a wall
The problem is that if the movement is below the threshold of the SR system there might be the possibility that a feedback loop will be created inside the SR system so it might actually move the sensor while the camera is completely still.
Why would the camera move the sensor if it doesn't detect any movement? Surely the idea is for the camera to move the sensor when there is movement detected?
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 20/07/2011 - 23:48
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All manufacturers recommend turning SR off if a tripod is used. The system searches for movement and if there is none it can cause problems.
Using the 2 second self timer alos switches off SR, locks up the mirror and is ideal for macro work on a tripod.
Using the 2 second self timer alos switches off SR, locks up the mirror and is ideal for macro work on a tripod.
Best regards, John
Posted 20/07/2011 - 23:53
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What kind of problems?
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 20/07/2011 - 23:58
Link
The only kind of problems that matter in this context - less sharp images.
All the manufacturers can't be wrong and it doesn't hurt us to believe them.
All the manufacturers can't be wrong and it doesn't hurt us to believe them.
Best regards, John
Posted 21/07/2011 - 00:59
Link
LOL
I don't do blind belief. It's unhealthy
I'm actually interested in the mechanics of this and want to learn about it, rather than just blindly believe something.
Hopefully someone knows the answer. Stefan mentions a feedback loop. Now there's an obvious feedback loop in normal workings of the SR. i.e
1] camera detects movement and moves the sensor to compensate,
2] camera detects less movement and moves the sensor less to compensate
3] Image is stabilised so camera stop moving sensor to compensate.
4] job done. you can now take a picture.
now.... in the situation where there is no movement one would expect the feedback loop to be finished. i.e
1] camera detects no movement so sensor isn't moved
2] job done. you can now take a picture.
So there must be some condition that moves the sensor when no movement is detected.
The world is full of stupid things, but I seriously doubt a camera manufacturer would code something that stupid.
So the question is ..... what?
....trots off to google in search of some sensible explanation ....
I don't do blind belief. It's unhealthy
I'm actually interested in the mechanics of this and want to learn about it, rather than just blindly believe something.
Hopefully someone knows the answer. Stefan mentions a feedback loop. Now there's an obvious feedback loop in normal workings of the SR. i.e
1] camera detects movement and moves the sensor to compensate,
2] camera detects less movement and moves the sensor less to compensate
3] Image is stabilised so camera stop moving sensor to compensate.
4] job done. you can now take a picture.
now.... in the situation where there is no movement one would expect the feedback loop to be finished. i.e
1] camera detects no movement so sensor isn't moved
2] job done. you can now take a picture.
So there must be some condition that moves the sensor when no movement is detected.
The world is full of stupid things, but I seriously doubt a camera manufacturer would code something that stupid.
So the question is ..... what?
....trots off to google in search of some sensible explanation ....
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
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4248 posts
15 years
Blyth,
Northumberland
You don't say what you are photographing. Is it static or moving subjects? I'd suspect the Pentax SR isn't as good for moving subjects. Peter refers to the Sigma 150-500, well that lens has 2 settings built in. One for static and one for panning. The Penax bodies don't have this.
PPG
Flickr