OTOY Forums

sorry if this has been asked before but is there an AOV that gives light values for daylight analyses?

something like in this:

https://www.youtube.com/watch?v=q3JI4rF ... yTck_5GQ6E (see around the 8 min mark)

or this:

https://www.youtube.com/watch?v=Tk4dOsqmcW0 (around 12:35 mins)

thanks

"light values" is ambiguous. There are a multitude of "light units" in their respective contexts.

None are natively available, and without going deep into "scientific" topics, perhaps the "False Color" (used on movie set and in post) is a viable alternative?

It is covered on this page (CTRL or CMD + F, "false color" to find it quickly).

thanks for this

thought i'd seen this somewhere but couldn't remember where...

i managed to find another way to work it out that doesn't need these outputs so will use that instead.

It was predominantly known in Filmic (mostly known in Blender) but is also common in motion picture cameras.

What outputs are you referring to exactly and what other way did you discover?

actually this request has little to do with rendering final images. what i'm doing is demonstrating sufficient light levels for a Chapel conversion here in the UK

i started looking into it and what i found at first were light simulations with outputs similar to the ones above. there's specialised software to do it that calculate min/avg/total light levels and give data on other things needed for planning purposes

Octane i'm sure has all this data too, it's just not geared to extract and present it all so i was just checking if there was a way to do so

after i posted the OP i found that there are a couple of text books that the local planning authorities refer to for this, so I delved into those and there are some formulae that i can use (based on room size, sky visibility, glass transparency and so on) that will (hopefully) satisfy planning