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Lighting changes on character just by distance of camera

benniewoodellbenniewoodell Posts: 1,999
in The Commons

Hi, 

I'm wondering if anyone has any idea how to fix this problem. The two stills I attached here are from the same shot, the only difference besides the character's eyebrows going down, is that the camera is farther away in the one shot than the other, otherwise it was rendered as an image sequence for the camera movement in the animation so nothing changes in the technical part. There is no depth of field on the camera either. Has anyone else encountered this? Nothing is changed in the render settings from the default, except I have this on scene only in environment mode because it's supposed to be in a dark basement. Any help or ideas would be greatly appreciated! 

Thank you!

Bennie

Comments

  • Matt_CastleMatt_Castle Posts: 3,009

    Does the camera have a headlight set?

  • benniewoodellbenniewoodell Posts: 1,999

    Good thinking, but I did turn that off...

  • nicsttnicstt Posts: 11,715

    Something else is attached to the camera that is acting as a light source.

    Also looking at the two images, the camera is certainly further away, but the scene is at a slightly different angle and so may be contributing.

  • benniewoodellbenniewoodell Posts: 1,999

    Hmmm, I wonder what could be attached, I only have two spotlights in the scene that are both overhead of the table, one directly pointing down and one a little farther away from the character and tilted at him. I had a similar situation with the first episode of my series where the camera was about that far away from the woman and she looked totally different lighting wise than when I moved in closer, she looked like a whole different character actually, I had to go and double check the settings to make sure nothing was changed! 

    I'll double check the headlamp thing though when I get home from work. Maybe I turned it off in the render settings but failed to in the camera settings itself. 

    Thanks for trying to help!

  • LinwellyLinwelly Posts: 6,055

    maybe you accidentially parented one of your spots to a cam. Happened to me when I keep the mouse clicked too long in the scene tab, I dragged some item onto another so they got parented

  • benniewoodellbenniewoodell Posts: 1,999

    I just got home and checked and the headlamp was turned off on both render settings and in the camera settings, and I also looked to see if anything was parented to the camera and nothing was. I was able to fix it, but it's in a way that shouldn't have to be done. I put another spotlight and shined it straight on the character at like half the luminense and it looked the same then from the wide shot to the close up. Weird. 

  • ParadigmParadigm Posts: 423

    I have had this issue and asked on these forums in the past and didn't get a satisfactory / correct answer to it, either. Same runaround about headlamps. Hopefully we can get to the bottom of this on this thread this time...

    If I put a light at one side of the room and render from near the light source I'll get result X, but if I move the camera closer to the other side of the room and render a close up it's much lighter. I have headlamps off on all my cameras in all my scenes (need to ctrl-L to even see anything) and it's pretty consistent. I would expect that the lighting in a PBR engine would be constant as it would be in reality because the light shines the same amount regardless of where the camera is.

    My theory is that it has something to do with the tone mapping or film ISO or some other arcane photography setting. It's certainly not headlamps or lights as some are suggesting. It sounds like you checked just as thoroughly as me and I know I have spent hours trying to solve this.

  • Richard HaseltineRichard Haseltine Posts: 108,063

    If you would, please post a simple sample scene (ideally using primitives or the starter essentials content) that shows this effect.

  • ParadigmParadigm Posts: 423
    Richard Haseltine said:

    If you would, please post a simple sample scene (ideally using primitives or the starter essentials content) that shows this effect.

    I'll try to remember to do so tonight after work. It only happens to me in interior renders so I'll need to make a little house out of blocks 

  • ebergerlyebergerly Posts: 3,255
    I agree with Richard. One of the challenges with debugging stuff like this is there's insufficient data to determine cause. General statements like "I did X and then Y happened" doesn't provide enough detail. Clearly something strange is going on, which probably means something that wasn't mentioned because it didn't seem relevant or was missed is actually the culprit. Only if we see the actual scene can a cause be determined. I'm curious, are you both using the same scene or characters or objects from the store?
  • ebergerlyebergerly Posts: 3,255
    Also, since we don't know what's in your scenes, my first step in any troubleshooting is to simplify and isolate. By that I mean start removing stuff from your scene until the issue goes away. Or try to make a simple version of your scene with simple primitives to see if you can duplicate.
  • ParadigmParadigm Posts: 423

    Specifically the most recent problem I've had has been using A Bright Loft (https://www.daz3d.com/a-bright-loft). My camera is almost exactly where the camera is in the promo image with 2 characters on the couch. I have all the textures converted to IRAY and I have all the lightbulb surfaces in the scene set to emssive using one of the lightbulb emssive presets from a product I can't remember the name of. When I render from this angle I get my expected outcome, but when I zoom in closer to be in front of the couch everything is super white washed.

    I get this in every interior scene I've rendered recently 

  • Silent WinterSilent Winter Posts: 3,875
    Paradigm said:
    Richard Haseltine said:

    If you would, please post a simple sample scene (ideally using primitives or the starter essentials content) that shows this effect.

    I'll try to remember to do so tonight after work. It only happens to me in interior renders so I'll need to make a little house out of blocks 

    Or just scale a primitive cube up to make a room (that'll be quicker ;) )

  • AllenArtAllenArt Posts: 7,175

    It's almost like light is bouncing off the camera o.O

    Laurie

  • ParadigmParadigm Posts: 423

    I forgot to do this last night. Will hopefully not forget tonight.

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