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 :-)
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