Good question, Mark. This is pure speculation on my part, but in conventional photography, it has the potential to give a Pentax - using a conventional bayer sensor - the IQ advantages of a Foveon sensor with none of the Foveon's disadvantages (like noise at higher ISOs). I am imagining is the mirror flipping up to take what would ordinarily be a single exposure instead would be four rapid sensor micro-shifted exposures. I would imagine that this would only be practical for either high shutter speeds or long shutter speeds. Perhaps these would be stored as 4 separate RAW files, but a single (effectively multi-exposure) JPEG would be displayed on the LCD.
On Wed, Mar 25, 2015 at 7:58 PM, Mark C <[email protected]> wrote: > Interesting - would this also be of advantage outside of asrtophotography? > Maybe more detail in landscape and macro photography? > > Mark > > > On 3/24/2015 11:32 PM, Darren Addy wrote: >> >> Yes, Bruce. But did you read the imaging-resource article? >> >> "Unlike Olympus' approach, which grabs 8 frames and uses a half-pixel >> shift between two groups of four to interpolate additional pixels, >> Ricoh's method uses just four shots, to bring the four pixels of each >> Bayer color filter array cell into alignment with each other. The >> resulting file has the same number of pixels as conventional shots, >> but each pixel contains full, uninterpolated RGB data. (Reminiscent in >> that sense of Sigma's Foveon sensors.)" >> >> On Tue, Mar 24, 2015 at 9:10 PM, Bruce <[email protected]> wrote: >>> >>> The new Olympus M5 mark ii already does this sensor shift to produce high >>> res images. >>> >>> -- >>> Bruce >>> >>> >>> On March 24, 2015 6:21:46 PM PDT, Darren Addy <[email protected]> >>> wrote: >>>> >>>> Sometimes silence speaks volumes. >>>> On March 14th, I sent Asahi Man (on DPReview Pentax SLR forum) a >>>> private message. Rather than repeat myself, I will tell you exactly >>>> what I told him... >>>> >>>> Dear asahi man, >>>> You clearly are knowledgeable about the structure of things at the >>>> current Pentax company. I was wondering if you would either pass this >>>> idea along, or (alternately) let me know who I might pass it along to. >>>> >>>> Pentax has a huge advantage that they can exploit in their DSLRs due >>>> to the SR system. They use this in a very innovative way with the >>>> O-GPS1 for astrophotography. This would be another way to exploit that >>>> system. >>>> >>>> What I propose is a menu for the SR system that would contain: ON, >>>> OFF, DITHER. This new DITHER setting would shift the sensor slightly >>>> (only 1 or 2 pixels) from the previous exposure. This would allow a >>>> particular part of a scene that was exposed by a RED photosite to also >>>> be exposed by a GREEN photosite and then a BLUE photosite. >>>> >>>> In astrophotography, those nearly identical images could then be >>>> aligned and stacked in software (like Registax or DeepSkyStacker) and >>>> eliminate noise, bringing out detail. >>>> >>>> To see the TREMENDOUS benefit this small change would make for >>>> astrophotographers, watch the first 9 minutes and 55 seconds of this >>>> video: >>>> https://www.youtube.com/watch?feature=player_embedded&v=PZoCJBLAYEs >>>> >>>> The Canon user in the system refers to shifting the CAMERA slightly, >>>> but Pentax could do it automatically. Thus cameras mounted to motor >>>> driven telescopes or using small trackers (like these: >>>> http://www.astrosurf.com/comolli/strum56.htm ) would be able to do >>>> tremendous astrophotography with Pentax cameras. The best part about >>>> this idea is that I believe it could be implemented with only a >>>> firmware update! >>>> >>>> Thank you for considering looking at this and passing it along to >>>> someone at Pentax who understands the appeal of astrophotography (like >>>> the team or individual that came up with the O-GPS1). >>>> >>>> </end of message> >>>> >>>> I was a bit surprised to receive absolutely no reply from him. Then >>>> came this yesterday: >>>> >>>> http://www.imaging-resource.com/news/2015/03/23/in-progress-ricoh-reveals-pixel-shifting-high-resolution-mode-coming-soon-t >>>> >>>> It appears that I have nailed it (or perhaps nearly so). It remains to >>>> be seen, but this is a HUGE leveraging of the sensor shift/shake >>>> reduction technology that Pentax owns and clearly understands. >>>> >>>> Frankly the fact that this upcoming camera is a full frame now becomes >>>> of secondary importance. The most important thing is to have ANY >>>> camera that can do THIS. Wowsers. >>> >>> -- >>> Sent from Kaiten Mail. Please excuse my brevity. >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Life is too short to put up with bad bokeh. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
