Don't know if the lack of contrast you reference is so significant as to be obvious in casually examining prints, but I have noted, in what relatively few K-5 images I've viewed, contrast has appeared somewhat low and the image, of course, a bit "flat".(?)
Jack --- On Sun, 11/7/10, Adam Maas <[email protected]> wrote: > From: Adam Maas <[email protected]> > Subject: Re: On K-5 dynamic range. Somewhat tangential question. > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Sunday, November 7, 2010, 10:18 AM > 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? > > Exactly. > > > And the dynamic range is about when it goes > > to saturation either to pure black and pure white. > > Pure white and indistinguishable from noise (not pure > black). The > noise floor determines the actual dynamic range's low end. > > > 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 bit depth of the RAW files shows up in subtle > gradations of colour > and in shadow noise. You get more subtle colour/tone > resolution and > less shadow noise with a higher bit depth ADC than with > less (the > shadow noise improvement is due to exactly how ADC's work > with linear > imaging sensors, you lose luminance resolution at low > luminance > values. Digital delivers superb resolution of bright tones > and poor > resolution of dark tones). In the real world, shadow noise > is the > easiest to see, especially on a camera which can shoot in > both 12 and > 14 bit modes like many Nikons. > > More dynamic range allows you to make less trade offs in > exposure at > shooting time. The more DR you have, the more you can hold > detail in > both the highlights and the shadows at the same time. The > downside is > the self-same image will be lower contrast when rendered > and you > usually have to make those trade offs in post instead. > > > -Adam > > -- > 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.
