It's good that the K-7 meets your needs. It meets mine as well for the most part. But you don't need a 300% enlargement to see the advantages on the K-5 in low light. While those are due only in part to the dynamic range, they are very real advantages that are easy to see even in web sized images. Paul On Nov 8, 2010, at 12:25 AM, Boris Liberman wrote:
> Thanks, David. > > This has been most enlightening reading. What I gather from these articles is > that 12 bit RAW vs 14 bit RAW is a bit (no pun intended) like JPG vs RAW > comparison, although to smaller extent. What I also understand is that as > dynamic range of sensors becomes wider it becomes necessary to use more > binary bits to effectively record the variation of these tones or brightness > levels that camera can discern. It is possible to squeeze them into narrower > bit width, but it will diminish the returns that electronics provide. > Therefore, although not directly but DR and bit width are related to one > another. > > I also gather that to see the difference between 12 bit and 14 bit RAW one > has to look at 300% enlargements of dark areas of special targets. Naturally, > this difference may be observed in less special conditions but for the time > being K-7 will have to do for me. > > Finally, I am gathering from these articles that for the purpose of /my/ > shooting K10D is absolutely sufficient for bright light and for low light no > camera is good enough as this is exactly the area that is being constantly > developed by camera manufacturers. To that end, due /my/ non-photographic > /constraints/ K-7 will have to do as well. > > Finally, like Miserere said to me on another occasion, I would like to be > shown a print that /really/ illustrates the advantages of K-5 14-bit 14.1 Ev > dynamic range over inferior K-7. Until then, I will see no reason to strain > myself one more time for upgrade purposes... > > Boris > > On 11/7/2010 11:54 PM, David Parsons wrote: >> This may help explain it: >> >> http://www.earthboundlight.com/phototips/nikon-d300-d3-14-bit-versus-12-bit.html >> http://www.earthboundlight.com/phototips/14-bit-raw-12-bit-part-two.html >> >> >> On Sun, Nov 7, 2010 at 12:46 PM, Boris Liberman<[email protected]> wrote: >>> Hmmm, so a camera with so many bits of RAW can do what then? Discern >>> 2^so many shades, right? And the dynamic range is about when it goes >>> to saturation either to pure black and pure white. Ok, so tell me >>> then, the wise people of PDML, is there a way looking at the same >>> picture shot with K-7 and K-5 to tell them apart? Or better yet, how >>> do I /see/ that one camera has wider DR than the other and that more >>> BPS in RAW are more beneficial than less BPS in RAW in real life. And >>> how all that translates to actual print? >>> >>> The only thing that comes to my mind is that wider DR and more BPS >>> gives me wider range of corrections in post or RAW development before >>> I start to see things like posterization etc. Anything beside/beyond >>> that? >>> >>> On Sun, Nov 7, 2010 at 6:23 PM, Miserere<[email protected]> wrote: >>>> On 7 November 2010 08:09, Adam Maas<[email protected]> wrote: >>>>> Dynamic Range in EV has no effect on the amount of shades the K-5 can >>>>> discern, it is merely defines the maximum and minimum brightness >>>>> values which supply usable data at the same time. The ability to >>>>> discern individual shades (or more properly differences between two >>>>> shades) is solely controlled by how many bits wide the ADC system is. >>>>> The K-5 can discern 2^14 shades maximum across a 14.1 EV ( a >>>>> brightness range of 2^14.1) range according to the DxO tests. There is >>>>> no direct correspondence between the two. >>>>> >>>>> -Adam >>>> >>>> What Adam said. >>>> >>>> --M. >>>> >>>> PS: Thanks for saving me all that writing :-) >>>> >>>> >>>> -- >>>> >>>> \/\/o/\/\ --> http://WorldOfMiserere.com >>>> >>>> http://EnticingTheLight.com >>>> A Quest for Photographic Enlightenment >>>> >>>> -- >>>> 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. -- 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.
