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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 :)

ISO, FLUT or EXPOSURE ?

N

nigelsmith

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i have been comparing the results of adjusting the ISO of a clip, the FLUT control, or the exposure slider.
when I increase either of these parameters by one stop, the results look identical.
So what is the difference?
Any advice gratefully received.
thanks
Nigel
 
Exposure can force clipping. FLUT and ISO gently bend the tones in the image to avoid clipping. A FLUT of +1 is the same as doubling ISO, but with FLUT you have a nice fine control over the over-all image brightness.

Graeme
 
It is important to understand that ISO and exposure are just metadata in raw images. And they both should mean the same thing. Why is the clipping happening then?
 
Tony de Vries said:
It is important to understand that ISO and exposure are just metadata in raw images. And they both should mean the same thing. Why is the clipping happening then?
Click to expand...

Graeme has mostly answered that if I read him right; I'm guessing the corollary of his answer is that the exposure control is remorselessly linear and can push into clipping, unlike FLUT & ISO, where the response is non-linear as clipping is approached?

Mike
 
Yes, Exposure is utterly linear. It's in there should you need that, whereas for normal use the FLUT curves are much more appropriate.

Graeme
 
For most of us it was exactly one year ago (really it was end of february, but that was an alphaish build with some significant calibration issues both for M and MX).

I remember because we used the alpha/beta when testing for a production that started shooting apr 6th.
By apr 6th the release was out.
 
So, what's the difference between ISO and FLUT, then? Is there any advantage to one over the other now? Why have FLUT if ISO now uses great curves?

Ryan
 
If I'm understanding correctly, and I feel like Graeme has said this before as well, the FLUT slider just allows you to adjust in tenths of a stop as opposed to the whole stops that the ISO slider gives you. They do the same thing, one is just a smaller scale. Correct me if I'm wrong.
 
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