Dragon ISO settings

[Domenic Barbero]

Have a few questions in my newbness of the settings of the new dragon sensors iso ratings.

On the current mx iso rating is 800 for best dynamic range but the sensor raw sees more like 320 iso which i believe is where i get the cleanest images. So on the dragon will the 2000 iso be the rating for greatest latitude or more like what the sensor sees raw? if its for best latitude where will the RAW sensor rating be roughly? which leads me to 2nd question

lets say the sensor sees RAW at 1250 iso, what would happen if i used 320 iso for shots. Will that give an even cleaner image or start doing weird things to the sensor if im exposing for 320 iso?

Any answers from RED or anyone really even if speculation would be excellent.

 

[Björn Benckert]

You then push your mids higher up on the histogram. As long as you do not clip you would be having a very noise free image.

 

[Domenic Barbero]

good to know

 

[Noah Yuan-Vogel]

The sensor does not see ISO at all, it only sees linear light voltages converted to linear light data. ISO is defined by the color science and gamma curve applied. RED does not "see" ISO320, that was just the ISO RED arbitrarily used for the "view RAW" function.

I would take what RED says seriously and not go more than a stop or two in each direction from their suggested ISO setting because the consistency of the gamma curve could be compromised a bit. It could be more difficult to create natural images as the curve becomes very unbalanced for example at low ISOs where there are only 3-4stops over middle grey and 9-10 under.

You could shoot at different ISOs but have similar noise performance if you adjust your settings or gamma curve to compress the noisy area of your shadows in the same way at the high ISO that it does at low ISO. However this is difficult to do once noise starts to creep into midtones.

 

[Ivan Kovax]

The sensor does not see ISO at all, it only sees linear light voltages converted to linear light data. ISO is defined by the color science and gamma curve applied. RED does not "see" ISO320, that was just the ISO RED arbitrarily used for the "view RAW" function.

WOw. I never knew that. I always assumed each particular sensor had a native ISO, with a fixed amount of electricity pumping into it to give it it's sensitivity.