Search
-
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
You can't really judge the light intensity by whether or not it looks correct in the viewport until you expose for it. It being white is expected because you're using a much wider range of intensities that need to be accounted for. You can increase max exposure value to something really high like 10,000 or just enabled… -
Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
Hi, I know something similar has been covered before but I couldn't find anything related to this issue. I have 4.26 UE version, here the issue: I want to simulate a Spotlight just like in real life. According to documentation a light bulb is 1700 lumens, my suprise was that the default unit of Spotlights are Candelas (cd)… -
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
I finally found the solution. It appears lumens are not the same as regular ones? 8 cd = 12 ld not sure where Unreal is pulling that from.... so okay in case anyone has the same problem they can do 2 things: -Lumens (at least the ones that we're used to) are the same as the unit "Unitless". Typed there 1700 and did the… -
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
Ok after reading your solution I think you're using the wrong math to convert to lumens because unreal doesn't calculate lumens using the cone angle of the light - it uses a standard light angle. So a point light would have the same lumens as a narrow spot light. from the documentation:… -
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
You can change the intensity units to lumens if you expand the "light" rollout. You could also search for "units" or "intensity" in "search details". Then you won't need to guess - just set the brightness to 1700 lumens. EDIT - when you say you "changed the units" what do you mean? Why couldn't you manually type in the… -
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
Forgot to type in the Angle in the online converter and it seems to be closer but not near. 44 angle results in 10 cd instead of the default 8 cd. Before the defult for spotlight used to be 5000 lumen. At this point I don't think it's safe to asume 5000 lumen = 8 cd in Unreal -
Re: Unreal Engine 4 Lighting Units confusing, issues Candela to Lumens
Sorry for the late repply, you are both correct. I was just confused on how to use real life values in UE4. The engine handles the conversion just fine. As I stated, you just have to change to "unitless", type the value you need and then switch to Lumens or Candelas, UE will handle the conversion. Thank you both!
7 results