4.19 Physical Lights

[A-J-K]

@rosegoldslugs

That’s correct. The range between the sun light and pretty much anything else, practical or natural, is extremely high. Even the range of the sun itself between noon and sunset is pretty extreme. The Lux values also include the sky contribution, so your light value will be slightly lower.

For night time exterior, you’d use an EV of -6 to 4, depending on what type of light your subject is under, including moon phases. For night interiors, an EV of 4 to 8 also depending on what type of light is used. If you want to use the manual controls, pick from the chart here that corresponds to your desired EV and f-stop. https://en.wikipedia.org/wiki/Exposu…amera_settings

That means a value of 1Lux for the directional light “moon” is correct? The problem i have with the current physical lighting setup in Ue4 is, 1Lux gives me no lighting at all in my scene.
I also have a problem with this data charts, i don’t really know how to match the terms in the charts with the editor ones, f number is a clear thing, it’s the f-stop in the editor… values like 1/125, 1/100 or 1/30 are the shutter speed values… but where are the ISO numbers ? I guess they are always the same like the shutter speed? And what is EV ? Exposure Values… Is it the Min and Max Brigthness in the Exposure tab ? or the Exposure Compensation value ?

The chart gives me also shutter speed values like 1 or 2 or 60, without the 1/ , the same goes for 2m, 4m, 8m, up to 256m and so on… how should i use this values ?

And for the simple sunny 16 rule setup like from Daedalus51’s video, Lumen and Candela values are still absolutely not working for me.