On 10/13/06, Ken Takeshita <[EMAIL PROTECTED]> wrote: > On 10/13/06, Perry Pellechia <[EMAIL PROTECTED]> wrote: > > That's a little misleading. The "12" bit rendering is only using 4 > > bits. The signal could certainly be preconditioned to use the > > digitizer better than that. > > > > Maybe, but this is a good "illustration" of the magnitude of > difference between 12 and 22 bit rendering. They are emphasizing the > difference in gradation (22bit/4,200,000 vs 12bit/4096) which should > result in a lot higher fidelity in presentating of skin, texture and > other stuff. > Well, pentax are the first one to use the 22bit converter with > supposedly excellent and fast processor (PRIME). From what I saw in > just a few recent samples, images looked excellent 9and very > natural). > Let's see how the final version samples would come out. >
Yes, I understand all about sampling, dynamic range and resolution. In my field (NMR spectroscopy) the instrumentation typically uses 12 or 16 bit ADCs. The four extra bits offer tremendous improvement in dynamic range and fidelity. Adding another 6 bits would offer even more improvements assuming what feeds the ADCs have enough dynamic range and high signal to noise. I just think that whoever came up with that illustration was intentionally misleading. Perry. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
