Accurate, real world lighting and exposure?

Maxon Cinema 4D (Export script developed by abstrax, Integrated Plugin developed by aoktar)

Moderators: ChrisHekman, aoktar

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lanklaf
Licensed Customer
Posts: 79
Joined: Sat Dec 23, 2017 4:22 pm

whersmy wrote:lanklaf! Is there a version as .orbx for us Standalone users to try it out? :o
Sure, here you have 2 similar nodes:

- Old_School_Exposure.orbx
viewtopic.php?f=73&t=43944&p=215296&hil ... re#p215296

- EV_compensation.orbx:
viewtopic.php?f=73&t=43971
Last edited by lanklaf on Wed Dec 23, 2020 5:43 pm, edited 1 time in total.
System:
i7 8700K / RTX 2020 / 16GB RAM
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lanklaf
Licensed Customer
Posts: 79
Joined: Sat Dec 23, 2017 4:22 pm

pcoombes wrote:
jayroth2020 wrote:I'm not arguing against a lumens-based UI, but that is not what we have today. I am trying to help you get to where you want to go with this using the existing toolset as it is.
Fully appreciate your help.

So far bepeg4D's work-around seems to do the trick, ie put the required lumens value in the power setting and use a floating point value in the Texture slot to control the 'efficiency' he uses a value of 1/683 = 0,001464. These values and the correct .ies file seem to mimic the real world rather well

I appreciate this is fairly specific to arch vis, but accurate lighting is a must (architects and interior designers are demanding task masters!). It's almost impossible to do things by eye when you have multiple lights undertaking specific lighting tasks (ceiling spots, wall washes, task lights, concealed lighting, etc.) with multiple intensities and temperatures. You end up going round in circles, rendering and re-rendering over and over again.

Now then, what about these camera settings?!
BTW, do not forget to use "normalize" when working with lumens.
System:
i7 8700K / RTX 2020 / 16GB RAM
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