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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Scarlet / Noise

I found this little chart for Alexa which explains very clearly how the ISO setting change the dynamic range distribution :

Grayscale+Mapping+at+different+EIs.jpg


Regarding the difference between the Red One and the Scarlet, there are some threads claiming that the Red One has a clearer image.
But some users just explains that we should use the Scarlet differently to get the same results.
Is there an official position from RED regarding the noise in the Scarlet vs Red One ?
 
May I ask one question, as the ISO discussion leaves a little bit the White Balance out. Is it correct to "imagine" that a white balance is nothing else than to adjust the ISO for R, G and B separately?
This might be technically in-correct, but how else would WB play into this discussion above (which I have enjoyed a lot, thank you). I try to understand the concept, so sorry if I'm completely off with my question.
 
Dr. Sassi said:
May I ask one question, as the ISO discussion leaves a little bit the White Balance out. Is it correct to "imagine" that a white balance is nothing else than to adjust the ISO for R, G and B separately?
This might be technically in-correct, but how else would WB play into this discussion above (which I have enjoyed a lot, thank you). I try to understand the concept, so sorry if I'm completely off with my question.
Click to expand...

As far as I know, White balance is exactly that, to make sure all color channels are equaly exposed. If you shoot with tungsten lights for instance, the blue channel gets under exposed and when you adust white balance, you bring the blue channel up and that introduces noise.
 
Thanks Rodrigo, very nice of you.
 
Miles Heckendorn said:
That chart made the lightbulb go off! Thank you! Has anyone seen a similar chart for the Epic/Scarlet?
Click to expand...

Hi Miles,
I would say that this chart is camera agnostic... I posted it here just to understand the effect of the ISO setting on a digital sensor.
 
The dynamic range would be a bit less for the Scarlet (without HDRx), but the same principle applies.
 
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