Originally posted by rawr The 'high-ISO' scam seems a bit like the 'high-shutter speed' or 'small aperture' scams.
I mean, who ever needs or uses 1/8000+ sec shutter speed or f32 aperture or above? ...
Real pros use cameras with fixed shutter, fixed focal length, and fixed aperture. Everything else is a scam.
---------- Post added 04-10-16 at 05:55 PM ----------
Originally posted by Rondec I don't really buy that the D810 sensor is obsolete. These are slightly different sensors that perform differently at different points on the iso curve. The D810 is maximized for low iso performance, allowing for iso 47 (DXO measured) as lowest iso,
it looks attractive, even in the raw editor, but it's a fake iso that gains nothing, same problem with the a7rii:
Nikon D810 fake ISOs | The Last Word
which i guess proves that the o.p. was right all along about iso scams, he was just at the wrong end of the iso spectrum
the d810 is still an xlnt camera, but it's technology is obsolete, the d5 is a more modern camera, with newer technology, including similar dual-stage sensor gain to what the a7rii has... i think that we'll be seeing more dual-stage gain in the future, it quite obviously pays off, what would be really nice is if you could turn it off and on
or even various levels of sensor gain off and on.
the a7rii has the very latest tech, like fully usable efcs up to 1/1000th for instance, in practically all shooting circumstances, can't do that with any dslr, and no mf camera that i'm aware of... that's huge, no shutter shake and no mirror vibration up to 1/1000th.
bill claff uses dxo measurements whenever possible, but different criteria can be applied to that data, notice here how the data doesn't show any dual-stage gain curve on the a7rii, and there isn't any d5 data, because dxo hasn't posted it:
DxOMark Derived Photographic Dynamic Range versus ISO Setting it looks like the curves on dxo because it's the same, afaik, but since it doesn't show the dual-stage gain, it's probably not as accurate a methodology.
here is bill himself, with links and discussion about his data:
Sensor Read Noise comparison chart - DSLR & Digital Camera Astro Imaging & Processing - Cloudy Nights