Boris, http://www.imaging-resource.com/PRODS/K5/K5RAW.HTM
"Here, we can see the Pentax K-5 clearly produces the cleanest looking RAW files, though it appears to be applying some noise reduction at higher ISOs (above ISO 1,600), which cannot be turned off. The noise reduction applied is pretty subtle, though, nothing like the heavy-handed approach used in earlier Sony SLRs. Still, it's something we'd rather not see in RAW files, as it does impact fine detail." This is noted by many other people as well. The noise reduction settings are for JPEG only by the way. The only affect how much NR is applied to a jpeg if your are converting raw or shooting in JPEG. On Thu, Nov 28, 2013 at 2:00 AM, Boris Liberman <[email protected]> wrote: > Zos, two points that still keep me wondering: > > 1. I couldn't find any mention of RAW noise reduction in Imaging > resource review after this link: > http://www.imaging-resource.com/PRODS/K5/K5A.HTM > > 2. I see what the person on DPReview wrote, but I think there is a > confusion and (as explained in imaging resource review) the noise > reduction can be configured per ISO. I don't remember exactly, but it > stands to reason that ISO 3200 is where it is set to kick in by > default. > > Specifically, once I learned about this setting, I went and configured > both of my cameras to apply no noise reduction until ISO 12800 or so. > > So, I'm yet unconvinced that K5 applies noise reduction at ISO 3200 > just because. > > On Wed, Nov 27, 2013 at 7:24 PM, Zos Xavius <[email protected]> wrote: >> Sorry for the delayed reply Boris. >> >> http://www.dpreview.com/forums/post/36834206 >> >> Also read the Imaging Resource and dxomarks reviews of the K-5. Pretty >> much all the reviews noticed the RAW NR above 1600. Given the K-5's >> output at 3200, Pentax made a good choice IMO. Their hardware NR is >> pretty decent, very clean looking, and still retains a lot of detail, >> especially after the raws are processed gently in lightroom. I never >> once objected to the engineers' decisions on the K-5 when it came to >> the sensor. Pentax seems to be very good at massaging maximum >> performance out of a sensor. The K-3 IMO looks very good too. A 50% >> increase in density with similar noise and DR over the previous >> generation is very good IMO. The next round of chips will likely be >> even better. What's not to like? The K-5 I have is very good in IQ. >> I'll keep shooting it till it doesn't take pictures anymore. >> >> On Tue, Nov 26, 2013 at 7:46 AM, Boris Liberman <[email protected]> wrote: >>> The source of information that indicates that K-5 applies smoothing to >>> RAW files even if I specifically set its settings not to do so. >>> >>> On Tue, Nov 26, 2013 at 1:52 PM, Zos Xavius <[email protected]> wrote: >>>> The source for K-5 raw smoothing? The source for resized K3 files? >>>> What source do you speak of Mr Boris? :P >>>> >>>> On Mon, Nov 25, 2013 at 11:45 PM, Boris Liberman <[email protected]> wrote: >>>>> On 11/26/2013 6:38 AM, Zos Xavius wrote: >>>>>> >>>>>> Also I must add that the k-5 does some definite noise reduction to the >>>>>> raw files over iso 1600, whether that's in the imaging pipeline or the >>>>>> firmware is neither hear nor there at this point. At 3200 on the k-5 >>>>>> you are most certainly trading resolution for image quality. I don't >>>>>> have any real figures, but I feel that looking at the files from my >>>>>> k-5, its easily giving up quite a bit of resolution due to noise >>>>>> smoothing. From what I can gather the K-3 is resolving more fine >>>>>> detail but yet showing similar amounts of noise when resized to k-5 >>>>>> resolution. That's what I have seen with my own eyes at least. To be >>>>>> honest they are pretty close and careful raw processing will result >>>>>> with more detail in the k-3 files with similar noise levels. I find >>>>>> pentax's jpeg engine to be not the greatest at noise reduction, but >>>>>> honestly, its better than some other camera makers too. >>>>> >>>>> >>>>> Zos, can you please point me to the source of that information? I'm >>>>> extremely interested to *know*. >>>>> >>>>> Thanks. >>>>> >>>>> >>>>> >>>>> -- >>>>> 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. >>>> >>>> -- >>>> 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. >>> >>> >>> >>> -- >>> Boris >>> >>> -- >>> 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. >> >> -- >> 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. > > > > -- > Boris > > -- > 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. -- 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.
