ISO 50 - Reduced DR on original DP's

The subject can have a brightness ratio that is pretty low for dull scenes (say 1:4) or pretty high in bright scenes (say 1:20,000).  If your sensor was capable of infinite dynamic range it would capture all the detail of the original scene.  You would then make the decision during editing as to how you wanted to render the scene in your image.

If your sensor has a dynamic range that is less than the brightness range of the scene then your camera cannot record all the detail and your choice of exposure determines what you end up  losing. In this case, you do not have the same breadth of artistic renderings available to you because your file doesn't contain all the data.

Generally (assuming you edit photos rather than using the untouched OOC files), you are better off with the first situation as it gives you far more editing options.

PrebenR wrote:

SRT201 wrote:

Interesting. So there's no gain on the imager and it's all just a matter of underexposure and multiplication during the development stage.

There is gain in terms of better IQ. I'm puzzled why people obsess about DR. For the most pleasing photos, people have reduced the DR in post anyway.

Here is a photo I took years ago. In this I reduced the DR in post quite a bit to obtain something more pleasing: https://www.flickr.com/photos/prebenr/6284631384/in/album-72157627678060149/

Not saying it is a goo picture, but if one wants to have an indefinite DR then things starts to look like snapshots.

In that case then the ISO 50 with -1 compensation should be identical to ISO 100's normal exposure. Correct? Fairly easy to test.

No.

Are the Quattro's ISO-less as well?

No.