Author Topic: Dual ISO Test (if it's correct, take it as a tutorial)  (Read 1372 times)

kore

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Dual ISO Test (if it's correct, take it as a tutorial)
« on: June 21, 2017, 09:23:45 PM »
Hi. I was wondering if I was doing it right so I thought the best way to ask about it was to show what I do.
It's a question, but if the method is correct, can be taken as a tutorial.

This is what I tried at home:


Final result (I'ts just a home test. Winning a contest was not my intention):


I found adjusting the curves more tricky than as usual. As you can see, some midtones (see the grey seat) are completely fu**ed so I know I'm not doing it completely right when It comes to push up the shadows.

Please, am I doing it about right? Is this workflow close to how it should be?

Thank you.

Audionut

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Re: Dual ISO Test (if it's correct, take it as a tutorial)
« Reply #1 on: June 30, 2017, 08:12:04 AM »
Well you got a useful image with low noise in the shadows......   What exactly concerns you?

More light is always better (until it hits saturation).  I'm guessing your test shot for highlights could have been at least 1/2 stop brighter.

bpv5P

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Re: Dual ISO Test (if it's correct, take it as a tutorial)
« Reply #2 on: July 01, 2017, 10:13:11 AM »
Try this rawtherapee profile. I use this most of the time for dual_iso.
You have to adjust exposure and constrast after applying, of course.
Ideed, the curve is really tricky. I find it simpler on rawtherapee, it has some really cool features for precise curve control.
You did right, but as @Audionut said, you probably could have exposed the highlights more 1/2 f-stop, if not 1 f-stop higher...