Originally posted by alamo5000 I don't get the whole color depth thing... (never came up for me)... but the idea of larger light buckets on the sensor makes sense... but the question remains... if I expose for the highlights but the rest of the frame is in deep shadow... how much is more... and how much more will be able to be recovered?
recovery is latitude more than dr, but they are closely related... one difference is that you can't really measure latitude.
"The quick summary then is that the Pentax 645z appears, not surprisingly, to have comparable resolution to the Sony A7RII when both are used with the very best lenses. Any lenses other than the best available in each mount will sway the result.
When it comes to noise at high ISO the Pentax 645Z wins. As for dynamic range, both cameras appear comparable in the shadow areas while the Sony has about a stop more recoverable in the highlight end.
In the end these cameras are really quite close in terms of sensor performance, and I wouldn’t choose one over the other on that basis. I love the 645Z’s interface and handling, huge optical viewfinder, fantastic battery life, great long exposure capability and overall robustness.
The Sony A7RII runs a neck and neck image quality race with the big Pentax, and so calling a winner is almost impossible."
https://web.archive.org/web/20150905213322/https://luminous-landscape.com/so...nds-on-report/
last post, bottom of the page, see the graphs, a7rii has overall equal dr to the 645z:
https://www.pentaxforums.com/forums/16-pentax-news-rumors/310344-pentax-645z-...1-dxomark.html
new sensors get you better dr, but no ff camera is able to equal the 645z iso noise levels, so the 645z still wins in that respect, i wish that i had one!
based on what the a7rii does, i'm guessing that the k-1 is going to have the mf guys reaching for their antacid medicine