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well if we come to light bulbs a simple emmiter will not do nothing just plain reflection-
i think incandescent emmiters its a must since all light have this from sun to bulbs .





in CG we only get this=

real light have a ''glow'' that is also reflective

zuliban wrote:real light have a ''glow'' that is also reflective

Zuliban,

You can get a glow if you assign UV rougness to the reflector. No ?

see examples



this is turned off maxwell can do it




this is turned on its just a plain white emiiter that dont do any glow or dont make the aluminium get that incadecence from this photo



also here u see what i mean




also happnes in sun on cars refections u see the glow arround it not just a shpere

its like a volumetric glow around light

zuliban wrote:see examples



this is turned off maxwell can do it




this is turned on its just a plain white emiiter that dont do any glow or dont make the aluminium get that incadecence from this photo


also here u see what i mean



also happnes in sun on cars refections u see the glow arround it not just a shpere

From the looks of these, it seems you have to model the filament as the actual emitter and use very high intensity setting, and let the globe be what it is (glass) in most cases- have you tried this?

Also do not forget inside these globes is usually gas, so yes,, it would be volumetric because it is not just air but a gas (usually argon) and other types of gas that give off glow when heated.

How could you create a glow inside a glass globe object -self-contained fog?

We might need a special volumetric fog material.

if u do that the walls will get burned and its incorrect then

''Incandescent light is produced when atoms are heated and release some of their thermal vibration as electromagnetic radiation. It is the most common type of light that you see everyday sunlight, regular light bulbs (not florescent) and fires are all incandescent sources of light. Incandescent light is also known as "black body radiation." This seemingly self-contradictory name arises from the history of physics-scientists studying this type of light emission modeled their theories on ideal materials that would absorb all colors of light, hence appearing to be "black bodies". Depending on how hot the material is, the photons released have different energies, and therefore, different colors''

i think emiters miss a volumetric like effect

I second that zuliban... But for now, you can use PS postproduction to achieve it

Oh well, I will render it

I think the light emitted from the heated gas inside the bulb is negligible, when you look at it from this distance, and the glow inside of the reflector is just the reflection of the emitter it self. So, with a proper geometric and shader setup, you should get convincing results, for example, give some roughness to the reflector mirror, or a faceted geometry.

The dazzling glow on the other hand is just an optical illusion, not real light emitting medium.

edit: corrected spelling mistakes, I just cant type...

Well, we need volumetrics for glow... I dislike the result.

It's like Aldaryn says, the glow you see is because of the camera optics, not the emitter itself.

You're right Mihai, the glow we need is an aperture artifact in real life.
I thought we may also have similar results with object fogs.

Whats wrong with your version, Tom? I think i'ts pretty close to the one Zuliban posted first, maybe a bit washed out, like it was missing some burn.

...maybe its just from the wrong angle. In such a complex situation, the slightest angle adjustment can change the whole look. And when you're shooting in studio setup, to make the subject appear as appealing as it can be, you can fiddle with it to get the nicest results, and even use some extra fill planes to brighten up the otherwise dull, and black reflector.

I like your result anyway. Maybe some scratches, imperfection on the reflector would make it even better.

Sure.. if I have more time I can make it look nearly the same but Mihai well explained what Zuliban wants. We need additional lens calculations like halos, glow etc. Thank you Aldaryn.

I would love to raise my digital hand in front of the bright sun, and admire the light scattering through my polygonal flesh, and around my hand a bright dazzle. And as the infra spectral energy warms my every vertex, I would love to move my fingers slightly, to uncover the sun, and blind myself with the frist, ever Maxwell rendered lens flare...