[IRAY] Can someone explain why the area gets brighter or darker based on camera distance?

Paradigm

Yes, the headlamp is disabled. I don't have any screenshots since I am at work, but I've noticed this on several scenes so I'm sure someone else has too.

Say I have a house scene that I've lit. I do a render from the center of the scene looking at a couch in the corner and it comes out moderately well lit. I now pull back and do a render from further away. The area around the couch is significantly darker. I zoom in until Im on top of the couch and render and it's much brighter. This is not realistic. The brightness should be consistent across the scene. What I see from the middle of the room should be the same directly in front of it. 

It makes keeping lighting consistent in scenes where I do multiple renders very obnoxious.

Philippi_Child

Well this just a thought since I’m still learning  but just like any other light source the further you move away from the light source the darker it will get and vise versa. 

I’ve experienced this same effect when I’ve focused on an object on the floor moving the camera from a higher altitude down to the object. But only makes sense to me that the further you move from the light the dimmer it becomes.

 

esha

There is an option in the render settings to switch the headlamp on/off, too. If it is on the headlamp might still be active when rendering even if it is switched off for the preview.

Try and see if that was it.

Paradigm

PaganArtist said:

Well this just a thought since I’m still learning  but just like any other light source the further you move away from the light source the darker it will get and vise versa. 

I’ve experienced this same effect when I’ve focused on an object on the floor moving the camera from a higher altitude down to the object. But only makes sense to me that the further you move from the light the dimmer it becomes.

Not like this. Getting close to an object washes them out to an extreme degree like you're blasting them with a super high power white light 

esha said:

There is an option in the render settings to switch the headlamp on/off, too. If it is on the headlamp might still be active when rendering even if it is switched off for the preview.

Try and see if that was it.

Hmmmm, that's an interesting thought. I figured disabling the headlamp on the camera would disaable it, period. I'll check tonight. Might already be off.

dragotx

Paradigm said:

PaganArtist said:

Well this just a thought since I’m still learning  but just like any other light source the further you move away from the light source the darker it will get and vise versa. 

I’ve experienced this same effect when I’ve focused on an object on the floor moving the camera from a higher altitude down to the object. But only makes sense to me that the further you move from the light the dimmer it becomes.

Not like this. Getting close to an object washes them out to an extreme degree like you're blasting them with a super high power white light 

esha said:

There is an option in the render settings to switch the headlamp on/off, too. If it is on the headlamp might still be active when rendering even if it is switched off for the preview.

Try and see if that was it.

Hmmmm, that's an interesting thought. I figured disabling the headlamp on the camera would disaable it, period. I'll check tonight. Might already be off.

With what you just said about the light blasting the scene out if you get too close it really sounds like the headlamp is on in your render settings.  I believe the render settings tab overrides the camera parameters settings.

nicstt

Paradigm said:

PaganArtist said:

Well this just a thought since I’m still learning  but just like any other light source the further you move away from the light source the darker it will get and vise versa. 

I’ve experienced this same effect when I’ve focused on an object on the floor moving the camera from a higher altitude down to the object. But only makes sense to me that the further you move from the light the dimmer it becomes.

Not like this. Getting close to an object washes them out to an extreme degree like you're blasting them with a super high power white light 

esha said:

There is an option in the render settings to switch the headlamp on/off, too. If it is on the headlamp might still be active when rendering even if it is switched off for the preview.

Try and see if that was it.

Hmmmm, that's an interesting thought. I figured disabling the headlamp on the camera would disaable it, period. I'll check tonight. Might already be off.

I have a scene that loads automatically; there is an extremely low wattage lamp in that scene; I also have settings checked so that if a light present the lamp is off. That way, the camera lamp is never an issue.

Szark

nicstt said:

Paradigm said:

PaganArtist said:

Well this just a thought since I’m still learning  but just like any other light source the further you move away from the light source the darker it will get and vise versa. 

I’ve experienced this same effect when I’ve focused on an object on the floor moving the camera from a higher altitude down to the object. But only makes sense to me that the further you move from the light the dimmer it becomes.

Not like this. Getting close to an object washes them out to an extreme degree like you're blasting them with a super high power white light 

esha said:

There is an option in the render settings to switch the headlamp on/off, too. If it is on the headlamp might still be active when rendering even if it is switched off for the preview.

Try and see if that was it.

Hmmmm, that's an interesting thought. I figured disabling the headlamp on the camera would disaable it, period. I'll check tonight. Might already be off.

I have a scene that loads automatically; there is an extremely low wattage lamp in that scene; I also have settings checked so that if a light present the lamp is off. That way, the camera lamp is never an issue.

ditto except for the lamp, don't need it. :)