Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-06-2009, 01:10 PM   #31
Veteran Member




Join Date: Jun 2007
Location: Buffalo/Rochester, NY
Photos: Albums
Posts: 1,133
QuoteOriginally posted by mithrandir Quote
We are all going to be so mad when Pentax comes out with the next big one and we buy it . . . only to find the real next big one comes out the following year.
It's always that way - always next year... Right after I bought the K10, the K20 was announced. I'm waiting now that I finally bought a K20D (it arrives tomorrow )...

01-06-2009, 02:53 PM   #32
Veteran Member
Buddha Jones's Avatar

Join Date: Sep 2006
Location: Charlotte, NC
Photos: Gallery
Posts: 2,587
I am glad that I ALMOST missed this thread. I am excited about the new releases and hope that some of that technology reaches the upcoming SLRs.
01-06-2009, 04:38 PM   #33
Veteran Member




Join Date: Aug 2007
Location: Madison, Wis., USA
Posts: 1,506
Pixel Tracking?

I just learned about Pixel Tracking Shake Reduction, known forever more as PTSR:

"When recording still images, the Optio P70’s new Pixel Track SR (Shake Reduction) mode effectively compensates for camera shake by processing the amount of image blur with a dedicated ASIC. Pixel Track SR tracks motion blur at the pixel level and calculates blur volume in real time. After exposure, the recovery filter centers the motion effect around each pixel to compartmentalize the blur. Then, an adjustment filter sharpens the pixels to help remove the blur effect. Pixel Track SR results in sharp images without adding high ISO noise. "

Any idea how effective this approach is? And how well it discriminates betwen subject motion and camera motion? And what "blur volume" might be? And why one would prefer this approach to optical image stabilization?

I expect that there's some interesting math involved in the computations - math that is carried out (at least partially) in the ASIC to reduce calculation time. ASICs sound expensive unless they're COTS (Commercial Off The Shelf).


Can someone explain this without calculus?
01-06-2009, 06:07 PM   #34
Veteran Member




Join Date: Jan 2008
Location: Ste-Anne des Plaines, Qc., Canada
Posts: 2,013
QuoteOriginally posted by glanglois Quote
I just learned about Pixel Tracking Shake Reduction, known forever more as PTSR:

"When recording still images, the Optio P70’s new Pixel Track SR (Shake Reduction) mode effectively compensates for camera shake by processing the amount of image blur with a dedicated ASIC. Pixel Track SR tracks motion blur at the pixel level and calculates blur volume in real time. After exposure, the recovery filter centers the motion effect around each pixel to compartmentalize the blur. Then, an adjustment filter sharpens the pixels to help remove the blur effect. Pixel Track SR results in sharp images without adding high ISO noise. "

Any idea how effective this approach is? And how well it discriminates betwen subject motion and camera motion? And what "blur volume" might be? And why one would prefer this approach to optical image stabilization?

I expect that there's some interesting math involved in the computations - math that is carried out (at least partially) in the ASIC to reduce calculation time. ASICs sound expensive unless they're COTS (Commercial Off The Shelf).


Can someone explain this without calculus?
I think it was Sony who used something similar on 8mm. video cameras about 15 years ago, if my memory serves me well (sometimes old geezer gets mixed up). They used to call it digital image stabilisation.

01-06-2009, 11:32 PM   #35
Veteran Member
F-Stop's Avatar

Join Date: May 2007
Location: Paradise, Newfoundland, Canada
Photos: Gallery | Albums
Posts: 303
QuoteOriginally posted by F-Stop:
Time to sell the K100D and upgrade to the P70, I can take higher res. images and HD video for a wedding all at once!

Crosses fingers for promising SLR models though, need a new body worth investing in further.
QuoteOriginally posted by bobrapp Quote
Some time ago, I said that my next camera (and I have about 20) would be a full frame camera. I changed my mind and went wit the K20d and some prime lenses (I am a prime kind of guy).

The only issue I have with some of the posts here are that some people are confronting and view their place as absolute - I gave that away many many years ago. A camera is a camera and little matters if it is not used for the sake of photography.

Lets get over it and move on.

Cheers,
Sigh... I guess there's a reason I rarely post here anymore, everything said is stepped on by someone else. The P70 sounds like a nice camera, I want one I can put in my pocket also and for the features this fits the bill. I just don't want to hold off waiting forever for a body I think is worth spending the little money I do have for features I want . No plans to jump ship but I also can't afford to buy a new model each year just to get a few anticipated upgrades. Like I said, fingers crossed or a K20D it is.
01-06-2009, 11:37 PM   #36
Veteran Member




Join Date: Mar 2007
Location: Philippines
Posts: 1,399
QuoteOriginally posted by glanglois Quote
Any idea how effective this approach is? And how well it discriminates betwen subject motion and camera motion? And what "blur volume" might be? And why one would prefer this approach to optical image stabilization?

I expect that there's some interesting math involved in the computations - math that is carried out (at least partially) in the ASIC to reduce calculation time. ASICs sound expensive unless they're COTS (Commercial Off The Shelf).

Can someone explain this without calculus?
I can't very well answer most of your questions, but as to why that approach was taken instead of OIS, I reckon it's cheaper to put in a piece of code whose R&D manhours cost can easily be distributed among a mass of cameras as opposed to real hardware that will add to the manufacturing cost per unit, not to mention once they have the code in place, it's also cheaper to include it in future cameras for zero cost (or minimal cost if they decided to improve on the code).

It'll be interesting to see how it works in the real world, if it's effective, and if it degrades image quality by a big chunk.

On a semi-related note, the new iMovie from Apple also includes the option to put in software-based image stabilization to movies in post-production. Perhaps that's (software-based stabilization) a big thing nowadays.
01-07-2009, 12:32 AM   #37
Inactive Account




Join Date: Sep 2008
Location: Philippines
Posts: 18
Isn't it odd that the Pentax compacts opted for a software based SR instead of lens or sensor based SR. Just a thought that I had when I was browsing through the Optio lineup. The DSLRs have a sensor shift mechanism SR but they did not apply this to the Optio. Vinzer, is probably right with the cost thing. It is probably expensive to install the SR they have for DSLRs into the Compact Cameras (If it is even possible to install it).

Another idea is probably that they have not found a way to do Lens based image stabilization which is what C**** uses. Or no workaround for the patent on this one. Just a guess though.

01-07-2009, 01:42 AM   #38
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 7,001
QuoteOriginally posted by inuafrj Quote
Isn't it odd that the Pentax compacts opted for a software based SR instead of lens or sensor based SR. Just a thought that I had when I was browsing through the Optio lineup. The DSLRs have a sensor shift mechanism SR but they did not apply this to the Optio. Vinzer, is probably right with the cost thing. It is probably expensive to install the SR they have for DSLRs into the Compact Cameras (If it is even possible to install it).

Another idea is probably that they have not found a way to do Lens based image stabilization which is what C**** uses. Or no workaround for the patent on this one. Just a guess though.
Optio A series have SR. Those are the only Optios with SR.
01-07-2009, 04:00 AM   #39
Inactive Account




Join Date: Sep 2008
Location: Philippines
Posts: 18
QuoteOriginally posted by thibs Quote
Optio A series have SR. Those are the only Optios with SR.
OOoops.. Sorry, My bad didn't see that one. Thanks!
01-07-2009, 04:24 AM   #40
Pentaxian




Join Date: Apr 2007
Location: Romania
Posts: 15,132
The P70 looks like a very compact camera. Maybe there is no room for "standard" SR?
01-07-2009, 04:53 AM   #41
Forum Member




Join Date: Sep 2008
Location: Lancashire, UK
Posts: 81
It is a space thing? I mean those Optio's are so small, and you'd have to have room for the plates carrying the coils, the sensor mounted on the magnet pcb and movement space in between? The canon p&s with IS seem thicker?
01-07-2009, 05:17 AM   #42
Banned




Join Date: Oct 2007
Location: Savannah, U.S./Baguio City, P.H.
Posts: 5,979
wow, the P70 is gorgeous! and it has an SMC lens with 28mm to boot. well done Pentax.

oh and it comes in white. hello apple fans, meet your new camera. http://www.pentaximaging.com/digital-camera/Optio_P70_-_White/
01-07-2009, 05:55 AM   #43
Veteran Member
Buddha Jones's Avatar

Join Date: Sep 2006
Location: Charlotte, NC
Photos: Gallery
Posts: 2,587
I love the color line-up! Hopefully this will help generate some revenue for the company.
01-07-2009, 06:10 AM   #44
Veteran Member
Mike Cash's Avatar

Join Date: Jan 2007
Location: Japan
Photos: Gallery
Posts: 6,950
QuoteOriginally posted by mithrandir Quote
We are all going to be so mad when Pentax comes out with the next big one and we buy it . . . only to find the real next big one comes out the following year.
Who needs to wait a whole year? Just wait until about 15 minutes after a new DSLR is released and Ogl will start a thread moaning about its shortcomings and speculating/lecturing on what the next year's release will be.
01-07-2009, 10:34 AM   #45
Site Supporter
Site Supporter




Join Date: Mar 2008
Location: Montclair, CA
Photos: Gallery
Posts: 426
QuoteOriginally posted by Mike Cash Quote
Who needs to wait a whole year? Just wait until about 15 minutes after a new DSLR is released and Ogl will start a thread moaning about its shortcomings and speculating/lecturing on what the next year's release will be.
Sure, Ogl is the *only one* who will do that, right? When Pentax/Hoya announces the new models, I expect this forum to be at least 75% negative, especially when there is no FF body. I'll be grabbing some popcorn and enjoying the fireworks!
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
optio, pentax, pentax news, pentax rumors, photography, review

Similar Threads
Thread Thread Starter Forum Replies Last Post
Streets Mo-er-ben fractal Post Your Photos! 10 07-30-2010 04:24 AM
Price of older models after introduction of new models? sterretje Pentax DSLR Discussion 5 01-22-2010 10:22 PM
Trying to be like Ben part 2 Torphoto Post Your Photos! 3 05-30-2008 10:28 PM
Trying to be like Ben Torphoto Post Your Photos! 5 05-10-2008 04:26 PM
Hey Ben..... jeffkrol Pentax News and Rumors 35 02-06-2008 11:30 AM



All times are GMT -7. The time now is 04:42 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top