CGTalk - Whats settings do you all use for mi_photographic

View Full Version : Whats settings do you all use for mi_photographic_exposure?

techmage

09-25-2009, 09:52 PM

I'm not a photographer. So I don't really understand all the film iso and shutter speed parameters beyond just adjusting them to get the right exposure. So I was curious, is there some special exposure quality that can be achieved by properly adjusting film iso, shutter speed and f number? Or does putting it into arbitrary mode (film_iso 0) and only using the cm2 factor allow you to essentially produce the same exact exposure quality, but with only 1 parameter? Whats the point of the seperate iso, shutter and f parameters then? And would any of you be willing to share what you use?

qjp

09-26-2009, 07:46 AM

Look here (http://kobayashystips.blogspot.com/2009/09/mia-exposure-photographic-ae-template.html)

-Peter

Dangertaz

09-27-2009, 04:21 AM

The thing that helped me the most was the advice of the noble ytsejam1976.

I set my cm factor to 3180. The ISO is left at 100, Film speed is 16 and the F number is 10.
My saturation is 1.2.

That's where I start and tweak from there.

techmage

09-27-2009, 08:15 PM

thanks for the info guys

I just did some tests and found that

cm2 factor 3180
film iso 100
shutter 35
f number 10

produces the EXACT same result as

cm2 factor 1
film iso 0

film iso 0 means its in arbitrary mode, so only cm2 factor controls exposure

so I guess the non-arbitrary mode does not offer any improved quality, its just 4 different parameters to produce the same result as in arbitrary mode

cgbeige

09-27-2009, 09:59 PM

after screwing around with this a bunch, I just said forget it and do my 32-bit EXR tonemapping, colour treatment and film feel in Nuke.

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